U.S. patent application number 13/610091 was filed with the patent office on 2013-01-03 for storage medium storing master boot record, computer system having the same and booting method of the computer system.
This patent application is currently assigned to SAMSUNG ELECTRONICS CO. LTD.. Invention is credited to Keon-young CHO, Deok-rae KIM, Kyung-young KIM, Seung-lee NAM.
Application Number | 20130007438 13/610091 |
Document ID | / |
Family ID | 41342951 |
Filed Date | 2013-01-03 |
United States Patent
Application |
20130007438 |
Kind Code |
A1 |
KIM; Deok-rae ; et
al. |
January 3, 2013 |
STORAGE MEDIUM STORING MASTER BOOT RECORD, COMPUTER SYSTEM HAVING
THE SAME AND BOOTING METHOD OF THE COMPUTER SYSTEM
Abstract
A method and an apparatus for a storage medium implemented by at
least one computer are provided. The storage medium includes a
first sector to store a first master boot record including an
execution code allowing the at least one computer to grasp command
information and to implement a preset control according to the
grasped command information, a first data storage region to store a
first data file for booting, a second sector to store a second
master boot record allowing the at least one computer to boot based
on the first data file, a second data storage region to store a
second data file for booting, and a third sector to store a third
master boot record allowing the at least one computer to boot based
on the second data file.
Inventors: |
KIM; Deok-rae; (Suwon-si,
KR) ; CHO; Keon-young; (Yongin-si, KR) ; KIM;
Kyung-young; (Suwon-si, KR) ; NAM; Seung-lee;
(Seoul, KR) |
Assignee: |
SAMSUNG ELECTRONICS CO.
LTD.
Suwon-si
KR
|
Family ID: |
41342951 |
Appl. No.: |
13/610091 |
Filed: |
September 11, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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12276683 |
Nov 24, 2008 |
8285978 |
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13610091 |
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Current U.S.
Class: |
713/2 |
Current CPC
Class: |
G06F 9/441 20130101 |
Class at
Publication: |
713/2 |
International
Class: |
G06F 9/00 20060101
G06F009/00; G06F 15/177 20060101 G06F015/177 |
Foreign Application Data
Date |
Code |
Application Number |
May 21, 2008 |
KR |
10-2008-0047230 |
Claims
1. A storage medium implemented by at least one computer, the
storage medium comprising: a first sector to store a first master
boot record including an execution code allowing the at least one
computer to grasp command information and to implement a preset
control according to the grasped command information; a first data
storage region to store a first data file for booting; a second
sector to store a second master boot record allowing the at least
one computer to boot based on the first data file; a second data
storage region to store a second data file for booting; and a third
sector to store a third master boot record allowing the at least
one computer to boot based on the second data file.
2. The storage medium as claimed in claim 1, wherein the first data
file comprises a WINDOWS operating system, and the second data file
comprises a recovery operating system.
3. The storage medium as claimed in claim 2, wherein the first data
file comprises WINDOWS VISTA.
4. The storage medium as claimed in claim 1, wherein the execution
code controls the at least one computer to load the third master
boot record when the command information is grasped.
5. The storage medium as claimed in claim 1, wherein: the first
master boot record comprises a partition table to allow the at
least one computer to boot based on the first data file; the second
master boot record comprises a boot code to allow the at least one
computer to boot based on the first data file; and the execution
code controls the at least one computer to load the partition table
from the first master boot record and the boot code from the second
master boot record when the command information is not grasped.
6. The storage medium as claimed in claim 1, wherein the preset
control loads the second master boot record or the third master
boot record according to the grasped command information.
7. The storage medium as claimed in claim 1, wherein the command
information controls the at least one computer to load the second
master boot record or the third master boot record according to a
selection signal received from a user to select between the first
data file and the second data file.
8. A computer system comprising: a user selection unit to receive a
user selection signal; a storage medium comprising a first data
storage region to store a first operating system, and a second data
storage region to store a second operating system different from
the first operating system; and a controller to selectively control
the first operating system or the second operating system to be
booted according to the user selection signal.
9. The computer system as claimed in claim 8, wherein the
controller controls the user selection signal to be stored as
command information.
10. The computer system as claimed in claim 8, wherein the storage
medium comprises: a first sector to store a first master boot
record including an execution code to allow the controller to grasp
command information; a second sector to store a second master boot
record to implement booting based on the first operating system;
and a third sector to store a third master boot record to implement
booting based on the second operating system.
11. The computer system as claimed in claim 10, wherein the
controller reads the first master boot record to execute the
execution code.
12. The computer system as claimed in claim 8, wherein the first
operating system is a WINDOWS operating system, and the second
operating system is a recovery operating system.
13. The computer system as claimed in claim 10, wherein the
controller loads the third master boot record according to the
execution code when the command information is grasped.
14. The computer system as claimed in claim 10, wherein: the first
master boot record comprises a partition table to implement the
booting based on the first operating system; the second master boot
record comprises a boot code to implement the booting based on the
first operating system; and the controller to load the partition
table from the first master boot record and the boot code from the
second master boot record according to the execution code when the
command information is not grasped.
15. The computer system as claimed in claim 8, wherein the first
operating system supports a security program corresponding to BIT
LOCKER or a network switching unit.
16. The computer system as claimed in claim 8, wherein the storage
medium comprises a hard disk drive.
17. The computer system as claimed in claim 8, wherein the
controller comprises a basic input output system (BIOS).
18. The computer system as claimed in claim 8, wherein the
controller controls the first operating system to automatically
boot after the second operating system is completely booted.
19. The computer system as claimed in claim 8, wherein the
controller controls the first operating system to boot or a
shutdown, according to a user selection, after the second operating
system is completely booted.
20. A booting method of a computer system comprising a first
operating system using a first master boot record and a second
operating system using a second master boot record different from
the first master boot record, the booting method comprising:
determining whether a user selection signal is received to
selectively booting either the first operating system or the second
operating system; selectively loading the first master boot record
or the second master boot record according to whether the user
selection signal is received; and booting the first operating
system or the second operating system according to the loaded
master boot record.
21. The booting method as claimed in claim 20, further comprising
storing the user selection signal as command information.
22. The booting method as claimed in claim 21, wherein the
determining of whether the user selection signal is received
comprises executing a predetermined execution code to grasp the
command information.
23. The booting method as claimed in claim 20, wherein the first
operating system is a WINDOWS operating system, and the second
operating system is a recovery operating system.
24. The booting method as claimed in claim 22, further comprising
loading the second master boot record when the execution code
grasps the command information.
25. The booting method as claimed in claim 22, wherein: the first
master boot record comprises a partition table and the execution
code to boot the first operating system; the computer system
comprises a third master boot record comprising a boot code to boot
the first operating system; and the execution code loads the
partition table from the first master boot record and the boot code
from the third master boot record when the command information is
not grasped.
26. The booting method as claimed in claim 20, further comprising
booting the first operating system when the booting of the second
operating system is completed.
27. The booting method as claimed in claim 22, further comprising
loading the first master boot record when the execution code does
not grasp the command information.
28. A storage medium implemented by at least one computer, the
storage medium comprising: a first data storage region to store a
first data file for booting; a second data storage region to store
a second data file for booting; and a sector to store a master boot
record including an execution code selectively controlling the at
least one computer to boot according to the first data file or the
second data file.
29. A booting method of a computer system comprising a first
operating system using a first master boot record and a second
operating system using a second master boot record different from
the first master boot record, the booting method comprising:
selectively loading the first master boot record or the second
master boot record according to a user selection signal; and
booting the first operating system or the second operating system
according to the loaded master boot record.
30. The booting method as claimed in claim 29, wherein the
selective loading of the first master boot record or the second
master boot record comprises: determining whether the user
selection signal is received; loading the first master boot record
if the user selection signal is not received; and loading the
second master boot record if the user selection signal is received.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of U.S. patent
application Ser. No. 12/276,683 filed on Nov. 24, 2008, which
claims the benefit under 35 U.S.C. .sctn.119(a) of a Korean patent
application filed on May 21, 2008 in the Korean Intellectual
Property Office and assigned Ser. No. 10-2008-0047230, the entire
disclosure of each of which is hereby incorporated by
reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] Aspects of the present invention relate to a storage medium
storing a master boot record, a computer system having the same,
and a booting method of the computer system, and more particularly
to a storage medium storing a master boot record that contains a
plurality of operating systems, a computer system having the same,
and a booting method of the computer system.
[0004] 2. Description of the Related Art
[0005] In general, a hard disk drive of a computer system (such as
a personal computer, a laptop computer, a workstation, a mobile
phone, a personal digital assistant, etc.) has memory addresses
from a zero address to a last address, and includes one or more
cylinders and a master boot record (MBR). The master boot record
occupies one sector of the hard disk drive, and informs the
computer system of a booting method and sector allocation with
regard to each file. Furthermore, a user may add another operating
system to the current operating system or add an application to the
master boot record or a certain sector of the hard disk drive to
use various applications such as a security solution, a recovery
solution, etc. With the solution providing additional operations,
the solution's own master boot record may be required.
[0006] If the master boot record for the existing operating system
is different from that of a solution desired to be used, a user
cannot use the solution. For example, if WINDOWS VISTA is employed
as the operating system, a security program (i.e., BIT LOCKER)
supported by WINDOWS VISTA is under control of the master boot
record for WINDOWS VISTA only. In this case, a solution using
master boot records other than the master boot record for the
exclusive use of WINDOWS VISTA cannot be used together with the BIT
LOCKER.
SUMMARY OF THE INVENTION
[0007] Aspects of the present invention to provide a storage
medium, a computer system having the same, and a booting method of
the computer system, in which different operating systems can be
booted through different master boot records. Aspects of the
present invention also provide a storage medium, a computer system
having the same, and a booting method of the computer system, in
which a recovery solution is easily executable under a WINDOWS
operating system.
[0008] According to an aspect of the present invention, there is
provided a storage medium implemented by at least one computer. The
storage medium includes a first sector to store a first master boot
record including an execution code allowing the at least one
computer to grasp command information and to implement a preset
control according to the grasped command information, a first data
storage region to store a first data file for booting, a second
sector to store a second master boot record allowing the at least
one computer to boot based on the first data file, a second data
storage region to store a second data file for booting, and a third
sector to store a third master boot record allowing the at least
one computer to boot based on the second data file.
[0009] In accordance with an aspect of the present invention, a
computer system is provided. The computer system includes a user
selection unit to receive a user selection signal, a storage medium
comprising a first data storage region to store a first operating
system, and a second data storage region to store a second
operating system different from the first operating system, and a
controller to selectively control the first operating system or the
second operating system to be booted according to the user
selection signal.
[0010] In accordance with an aspect of the present invention a
booting method of a computer system having a first operating system
using a first master boot record and a second operating system
using a second master boot record different from the first master
boot record is provided. The booting method includes determining
whether a user selection signal is received to selectively booting
either the first operating system or the second operating system,
selectively loading the first master boot record or the second
master boot record according to whether the user selection signal
is received, and booting the first operating system or the second
operating system according to the loaded master boot record.
[0011] In accordance with an aspect of the present invention a
storage medium implemented by at least one computer is provided.
The storage medium includes a first data storage region to store a
first data file for booting, a second data storage region to store
a second data file for booting, and a sector to store a master boot
record including an execution code selectively controlling the at
least one computer to boot according to the first data file or the
second data file.
[0012] In accordance with an aspect of the present invention a
booting method of a computer system having a first operating system
using a first master boot record and a second operating system
using a second master boot record different from the first master
boot record is provided. The booting method includes selectively
loading the first master boot record or the second master boot
record according to a user selection signal, and booting the first
operating system or the second operating system according to the
loaded master boot record.
[0013] Other aspects, advantages, and salient features of the
invention will become apparent to those skilled in the art from the
following detailed description, which, taken in conjunction with
the annexed drawings, discloses exemplary embodiments of the
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] These and/or other aspects and advantages of the invention
will become apparent and more readily appreciated from the
following description of the embodiments, taken in conjunction with
the accompanying drawings of which:
[0015] FIG. 1 is a schematic diagram of a storage medium with a
master boot record according to an embodiment of the present
invention;
[0016] FIG. 2 is a control block diagram of a computer system
according to an embodiment of the present invention, having the
storage medium of FIG. 1; and
[0017] FIG. 3 is a control flowchart to explain a booting method of
the computer system in FIG. 2.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0018] Reference will now be made in detail to the present
embodiments of the present invention, examples of which are
illustrated in the accompanying drawings, wherein like reference
numerals refer to the like elements throughout. The embodiments are
described below in order to explain the present invention by
referring to the figures.
[0019] FIG. 1 is a schematic diagram of a storage medium 100 with a
master boot record according to an embodiment of the present
invention. The storage medium 100 shown in FIG. 1 is a hard disk
drive of a computer system. As shown, the hard disk drive 100 is
divided into a plurality of sectors 110, 120, and 130 (i.e., a
storage regions), and the sectors 110, 120, and 130 respectively
store different information.
[0020] Referring to FIG. 1, the storage medium 100 includes sectors
110, 120 and 130 to store the master boot records MBR 1, MBR 2 and
MBR 3, respectively, and first and second data storage regions 140
and 150 to store first and second data files 141 and 151 for
booting. The sector and the data storage regions are named for
convenience according to data stored in the storage medium 100, but
it is noted that the scopes thereof are not limited thereto.
[0021] A first sector 110 stores a first master boot record MBR 1,
and the first master boot record MBR 1 includes an execution code
111 and a first partition table 113. The execution code 111
corresponds to a program that grasps certain command information.
The execution code 111 is executed when the first master boot
record MBR 1 is read, and grasps the command information, thereby
performing a preset control based on the command information. In
this embodiment, the execution code selects a master boot record to
be read after the first master boot record MBR 1, such that booting
is implemented according to the selected master boot record. In the
first partition table 113, partition information of a first data
file 141 is set to an active partition so that the booting can be
implemented using the first data file 141.
[0022] A second sector 120 stores a second master boot record MBR
2, and the second master boot record MBR 2 includes a first boot
code 121 that allows the booting to be implemented on the basis of
the first data file 141. That is, when the booting is implemented
on the basis of the first data file 141, the first partition table
113 of the first master boot record MBR 1 and the first boot code
121 of the second master boot record MBR 2 are read by the
execution code 111.
[0023] A third sector 130 stores a third master boot record MBR 3,
and the third master boot record MBR 3 includes a second boot code
131 and a second partition table 133. The second boot code 131 and
the second partition table 133 allow the booting to be implemented
according to a second data file 151. In the second partition table
133, partition information of a second data file 151 is set to an
active partition so that the booting can be implemented using the
second data file 151.
[0024] The first data file 141 of the first data storage region 140
may include an operating system from the MICROSOFT WINDOWS series
(such as WINDOWS VISTA). The operating system controls management
and allocation of resources of the computer system, and execution
of application programs, thereby creating an environment that
allows a user to use the computer system and storing various
applications and information. The second data file 151 of the
second data storage region 150 includes a different operating
system from that included in the first data file 141. In this
embodiment, the second data file 151 includes a recovery operating
system for a recovery solution. The recovery operating system is
booted using a different master boot record from that of the
operating system stored in the first data storage region 140 (for
example, from the WINDOWS VISTA operating system stored in the
first data storage region 140). However, it is understood that
aspects of the present invention are not limited thereto. For
example, the second data storage region 150 may be a virtual space
(i.e., logical data space) generated for the recovery operating
system. In this case, the recovery operating system may be stored
in an additional storage medium (e.g., an optical disk drive)
physically separated from the storage medium 100.
[0025] As described, the storage medium 100 stores the plurality of
operating systems, and the respective master boot records to boot
up the operating systems. In this embodiment, the first master boot
record MBR 1 of the storage medium 100 stores the execution code
111, as opposed to the boot code for booting. Therefore, the
execution code 111 is first loaded when the booting starts to load
the data from the storage medium 100. The loaded execution code 111
selects the master boot record to boot the first operating system
or the second operating system. Here, the boot code, which is
conventionally stored in the first master boot record MBR 1, is
stored in the second master boot code MBR 2. That is,
conventionally, the operating system (such as WINDOWS) was booted
according to the master boot record stored in the first sector of
the storage medium. On the other hand, the recovery solution, which
uses the master boot record other than the master boot record
stored in the first sector, cannot be booted up by the recovery
operating system even though the recovery operating system is
stored in the hard disk drive or the like storage media.
Accordingly, the operation of the recovery solution cannot be used
conventionally.
[0026] However, according to aspects of the present invention, the
operating system can be selectively booted by the execution code
111 stored in the first master boot record MBR 1. Thus, the
recovery solution is freely usable without colliding with the prior
boot. Furthermore, the partition table 113 for the existing boot is
used as is without change, and therefore there is no collision
between different operating systems. Also, the independent
partition table 133 for the recovery operating system is provided
so that protection of the program can be improved.
[0027] The storage medium 100 may include a plurality of other data
regions (not shown). Such data regions may store various system
files (e.g., "io.sys," "msdos.sys," "command.com," etc.) used to
boot the operating system.
[0028] The foregoing indexes and labels (MBR 2, MBR 3, second
sector, third sector, etc.) are used for the mater boot records and
the sectors for convenience of description, and do not limit
aspects of the present invention to certain locations of the
storage medium. Here, the location of the master boot record may
vary according to a capacity and utility of the storage medium. For
example, if the existing master boot records are stored in the
first through third sectors, the second and third master boot
records according to other aspects may be stored in fourth and
fifth sectors, respectively.
[0029] FIG. 2 is a control block diagram of a computer system
according to an embodiment of the present invention, having the
storage medium of FIG. 1. As shown, the computer system includes
the storage medium 100, a user selection unit 200, a memory 400,
and a controller 300 to control the storage medium 100, the user
selection unit 200, and the memory 400. The storage medium 100
illustrated in FIG. 2 is similar to the storage medium 100
illustrated in FIG. 1, and thus repetitive descriptions thereof
will be avoided.
[0030] The memory 400 may be a random access memory (RAM) or the
like, and stores data from the storage medium 100 and the
controller 300. Hereinafter, "reading the data" and "loading the
data" refer to storing certain data in the memory 400.
[0031] The user selection unit 200 is a user interface to receive a
selection signal from a user. For example, the user selection unit
200 may receive the selection signal from a keyboard, a button, a
mouse, a touch screen, etc., provided in the computer system. Also,
the user selection unit 200 may include an electronic interface to
send the controller 300 a user's selection signal generated through
a physical interface. Thus, a user may either select the general
operating system (such as WINDOWS VISTA) or the recovery solution
to be booted up. As an example, if there is any selection signal
input through the user selection unit 200, the recovery solution is
booted. Otherwise (i.e., if there is no input of the selection
signal), the general operating system is booted. At this time, a
user may generate the selection signal by pressing a certain
operation key (e.g., "F4" or "F7") of a keyboard. However, it is
understood that aspects of the present invention are not limited to
such a booting according to whether a user selection signal is
input. For example, alternatively, the selection signals may be
individually input to select the operating systems, respectively.
Also, if there are three or more operating systems, three operating
systems may be booted according to a predetermined booting priority
or a certain operating system may be set up to be first booted.
[0032] The controller 300 controls either of the first operating
system or the second operating system to be booted according to
whether a user inputs the selection signal and/or according to the
input selection signal. The controller 300 may be a basic input
output system (BIOS), and includes a control module where a flash
memory storing BIOS data and a central processing unit (not shown)
communicate with each other to control the BIOS data. The
controller 300 mainly controls initial booting when the computer
system is turned on.
[0033] During the booting of the computer system, the BIOS data
stored in the flash memory is loaded to the memory 400 after a
power on self test (POST). Before starting the booting based on the
BIOS, a waiting time is given to allow a user to set up the BIOS
data, a boot sequence, etc. During the waiting time, a user may
select a booting path. The controller 300 controls the selection
signal to be stored as command information 301 when receiving the
selection signal through the user selection unit 200. Here, the
command information 301 may be stored in a built-in memory, a main
memory, a separate memory, an external memory, etc. The command
information 301 corresponds to a flag signal to inform the storage
medium 100 that a user selects the booting based on the recovery
solution.
[0034] After all data is loaded from a BIOS read only memory (ROM),
system files are loaded from the hard disk drive. At this time, the
operating system starts to be booted. The controller 300 reads the
first master boot record MBR 1 from the first sector 110 of the
storage medium 100 and controls the execution code 111 included in
the first master boot record MBR 1 to be executed. The execution
code 111 is executed to determine whether the command information
301 exists in the controller 300, and selects the next master boot
record to be loaded to the memory 400 according to the command
information 301.
[0035] If the command information 301 exists in the controller 300,
the execution code 111 reads the third master boot record MBR 3
from the third sector 130. When the third master boot record MBR 3
is loaded, the recovery operating system stored in the second data
storage region 150 is booted depending on the second boot code 131
and the second partition table 133. If the command information 301
does not exist in the controller 300, the execution code 111 reads
the first partition table 113 from the first master boot record MBR
1 stored in the first sector 110 and the first boot code 121 from
the second master boot record MBR 2 stored in the second sector
120.
[0036] As an example, WINDOWS VISTA supports BIT LOCKER as a
security solution. BIT LOCKER should communicate with trusted
platform modules (TPM) to strengthen protection of the system files
before booting the operating system. Such communication is
performed through the first boot code 121 provided by WINDOWS
VISTA. That is, the first boot code 121 is employed for
communication with the TPM when BIT LOCKER is used. In this case,
it was conventionally impossible to use the recovery solution that
uses its own master boot record. Further, in the case that a
network switching unit is used as a security program, the network
switching unit uses a certain boot code supported by WINDOWS, so
that it was conventionally impossible to use the recovery solution.
These problems are solved by the execution code 111 and the
selection of the booting path through the execution code 111. Thus,
a desired operating system can be booted without considering a
collision between the operation systems.
[0037] FIG. 3 is a control flowchart to explain a booting method of
the computer system in FIG. 2 according to an embodiment of the
present invention is as follows. Referring to FIG. 3, a user inputs
a selection signal to execute a recovery solution before the
booting is implemented by the controller 300 in operation S10. If
the user inputs the selection signal through the user selection
unit 200 (operation S10), the controller 300 controls the selection
signal to be stored as the command information 301 in operation
S20.
[0038] If there is no input of the selection signal (operation S10)
or after the command information 301 is stored, the controller 300
loads the first master boot record MBR 1 from the first sector 110
of the storage medium 100 and executes the execution code to start
booting the operating system in operation S30.
[0039] The execution code 111 is executed and determines whether
there the command information 301 is stored in operation S40. If
the command information 301 is stored due to the selection signal
from a user (operation S20), the execution code 111 loads the third
master boot record MBR 3 from the third sector 130 to thereby run
the recovery solution in operation S50. When the second boot code
131 and the second partition table 133 are read from the third
master boot record MBR 3, the recovery operating system from the
second data storage region 150 is booted and, thus, the recovery
solution is run in operation S60.
[0040] On the other hand, if there is no command information 301,
the execution code 111 reads the first partition table 113 from the
first master boot record MBR 1 and the first boot code 121 from the
second master boot record MBR 2, thereby forming a new master boot
record in operation S70. Then, the operating system stored in the
first data storage region 140 (for example, a WINDOWS operating
system) is booted according to the new master boot record in
operation S80. If the recovery operating system is completely
booted, the operations (operations S70 and S80) for booting the
first operating system proceed automatically. However, it is
understood that aspects of the present invention are not limited
thereto. For example, alternatively, if the booting of the recovery
operating system is completed, a user may select whether to boot
the first operating system. In this case, the computer system may
display user interface (UI) information to check whether a user
wants to reboot. Here, a user may selectively reboot or shut down
the computer system.
[0041] It is understood that the first operating system is not
limited to WINDOWS, and may include Linux, Unix or the like, and
the second operating system is not limited to the recovery
operating system. Aspects of the present invention addresses a
problem that a separate operation cannot be run when selected
before a general booting because a master boot record is not
shared. In other words, aspects of the preset invention are not
limited to a certain operating system and are applied to various
operating systems that do not share one master boot record (i.e.,
respectively use different master boot records).
[0042] As described above, aspects of the present invention provide
a storage medium, a computer system having the same, and a booting
method of the computer system, in which different operating systems
booted through different master boot records are usable.
Furthermore, aspects of the present invention provide a storage
medium, a computer system having the same, and a booting method of
the computer system, in which a recovery solution is easily
executable under an operating system such as WINDOWS. Also, aspects
of the present invention provide a storage medium, a computer
system having the same, and a booting method of the computer
system, in which a recovery solution is easily executable while
using a network switching unit.
[0043] Aspects of the present invention can also be embodied as
computer-readable codes on a computer-readable recording medium.
Also, codes and code segments to accomplish the present invention
can be easily construed by programmers skilled in the art to which
the present invention pertains. The computer-readable recording
medium is any data storage device that can store data which can be
thereafter read by a computer system or computer code processing
apparatus. Examples of the computer-readable recording medium
include read-only memory (ROM), random-access memory (RAM),
CD-ROMs, magnetic tapes, floppy disks, and optical data storage
devices. The computer-readable recording medium can also be
distributed over network-coupled computer systems so that the
computer-readable code is stored and executed in a distributed
fashion. Aspects of the present invention may also be realized as a
data signal embodied in a carrier wave and comprising a program
readable by a computer and transmittable over the Internet. 100421
Although a few embodiments of the present invention have been shown
and described, it would be appreciated by those skilled in the art
that changes may be made in this embodiment without departing from
the principles and spirit of the invention, the scope of which is
defined in the claims and their equivalents.
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