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| | Master boot record - Wikipedia, the free encyclopedia |
 | | Because the MBR is read almost immediately when the computer is started, many computer viruses made in the era before virus scanner software became widespread operated by changing the code within the MBR. | | | In the IBM PC architecture the Master Boot Record (MBR), or partition sector, is the 512-byte boot sector, i.e. | | | In both cases the BIOS init transfers control to the first sector of the disk after reading it into memory. |
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http://en.wikipedia.org/wiki/Master_boot_record
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| | MBR - Master Boot Record |
| | MBR viruses normally enter a system through a floppy disk that is installed in the floppy drive when the computer is started up. | | | Short for Master Boot Record, a small program that is executed when a computer boots up. | | | Since the MBR executes every time a computer is started, this type of virus is extremely dangerous. |
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http://www.auditmypc.com/acronym/MBR.asp
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| | The Master Boot Record (MBR) and What it Does |
| | In order to understand the Master Boot Record and the Master Boot Code buried within it, it might be helpful to understand the sequence of events that occur when your computer starts. | | | If a Master Boot Record is found, it is read into memory at location 0000:7c00 and INT 19 jumps to memory location 0000:7c00 the same as was the case with the floppy. | | | Once the boot sector is found and its contents or data verified, the BIOS starts the process of booting the operating system by using the information in the boot sector. |
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http://www.dewassoc.com/kbase/hard_drives/master_boot_record.htm
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| | Master Boot Record - MBR |
| | Short for Master Boot Record, MBR is also sometimes referred to as the "master boot block" and is the first sector of the computer hard disk drive used to determine from which partition a computer will boot. | | | The master boot record is located on the first sector of the hard drive; it's the first program the computer runs after performing a memory check and looking for a bootable disk (if set in CMOS). | | | The MBR tells the computer where to find and how to load the operating system. |
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http://www.computerhope.com/jargon/m/mbr.htm
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| | Master Boot Record Save and Restore--Application" |
| | Boot to the boot floppy and type "getmbr lilo.mbr". | | | The MBR files you save are snapshots of the disk as it existed at the time you saved the MBRs. | | | Then boot to the boot floppy and type "getmbr dos.mbr" (or whatever filename you choose for the initial partition configuration). |
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http://www.allthatcounts.com/comp/mbr1.htm
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| | [No title] |
| | When the computer is booted from the hard disk, the virus is executed first, and the hard disk can thereafter be used normally. | | | The hard disk is inaccesible after a diskette boot, since the operating system cannot find valid partition data in the Master Boot Record - attempts to use the hard disk result in the DOS error message "Invalid drive specification". | | | The virus is not, therefore, easily noticeable, unless the computer is booted from a diskette. |
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http://ciac.llnl.gov/ciac/virdb/VIRS0614.TXT
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| | Xavier's programming pages - Master Boot Record |
| | This implies that, if the hard disk is the first one, the first bytes of the master boot record have to be instructions. | | | Notice that the BIOS itself has no idea of what a partition is, it only loads the first sector of the disk into memory and executes it. | | | Its initial value is 7C00h, so that it points to the boot code. |
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http://www.yates2k.net/master.htm
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| | master boot record - Linux Terms |
| | The master boot record (or MBR) is a section of a disk drive's storage space that is set aside for the purpose of saving information necessary to begin the bootstrap process on a personal computer. |
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http://www.linuxselfhelp.com/linuxterms/index/masterbootrecord.html
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| | IBM DOS 2.00 Master Boot Record |
| | For the DOS 3.30 MBR, these were all replaced by 00 bytes which were moved to the end of each string. | | | When the MBR code for DOS 3.30 was released, the 'F3' byte that you see above (at location 7C16) was changed to an 'F2' for some odd reason; remaining that way until it was finally changed back to an 'F3' for Microsoft's FAT32 MBR. | | | Since use of the 'F2' machine code byte for carrying out this instruction is at best 'undocumented' [see here for all the details], I have to wonder if changing this was an error in some Assembler or something that the programmer(s) actually intended to do. |
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http://thestarman.pcministry.com/asm/mbr/200MBR.htm
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| | Sophos: Disinfecting master boot record viruses that store the boot sector |
| | Disinfecting master boot record viruses on floppy disks in Windows 95/98/Me/NT/2000/XP and OS/2 | | | After disinfection re-boot OS/2 from the hard disk and scan the whole computer to check it. | | | After disinfection scan the whole computer again to check it. |
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http://www.sophos.com/support/disinfection/mbrvir.html
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| | Master boot record |
| | The Master Boot Record on the hard disk that you use to start your computer | | | Verify that the file looks like a Master Boot Record and that it is 512 bytes. | | | Consider saving the file to the Emergency Repair Disk, the Windows NT startup floppy disk, or the MS-DOS bootable floppy disk. |
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http://home.hccnet.nl/beitler/tips_tricks/nt4/master_boot_record.htm
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| | Master Boot Record |
| | When I read the partition entries of the mbr it seems that for all words the high and the low byte are reversed. | | | Word and Long data (all multibyte values) in the MBR (and Volume Boot Records) are in Little Endian format, meaning the low value (LSB) comes first. | | | This format is used on Intel, Zilog and AVR processors (and others). |
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http://www.myplace.nu/mp3/yabbse/index.php?topic=1655.0
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| | The Master Boot Record - The Scream! |
| | Restoration of a hard drive that has a faulty MBR may not be possible from Windows 98SE because Windows may not see the drive. | | | Following this analogy could I consider that my duff information is on the left channel that is currently not being used and the right channel is being re-recorded. | | | The help files of RepoMan (that I felt help define my difficulties) explain at great length the relationship between the MBR and Fat Allocation Files and the program (as far as I'm aware) uses a recovery procedure to move the back up allocation file to replace the missing or damage one. |
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http://www.the-scream.co.uk/forums/showthread.php?t=5124
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| | PCApex Forums - Master Boot Record Questions! |
| | I have gotten the computer to boot into windows xp before and it recognized a virus and would not completly boot. | | | Once that is complete, turn off the computer and run a flash bios program and install new bios on it. | | | I have initially thought it was a main board problem. |
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http://forums.pimprig.com/anything_goes/9633-master_boot_record_questions-print.html
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| | Repairing The Master Boot Record |
| | However, I had decided to remove an operating system from a computer and System Commander was damaged in the process. | | | If your system is running Windows 98, use a separate system to create a bootable floppy disk and copy the FDISK file to it. | | | Now, boot the damaged system from the boot floppy. |
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http://www.brienposey.com/kb/repairing_the_mbr.asp
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| | Boot Records Revealed! |
| | The FAT32 Boot Record under Windows™ 2000 or XP The VBR created by Windows™ 2000/XP/2003 for a FAT32 partition, or what your old Windows 9x/Me VBRs (see MSWIN4.1 VBR) in the first partition of the first drive will be changed into when installing Win 2000/XP on that system. | | | For Booting the MS-DOS 5.0 to 6.22 Operating Systems from a floppy diskette. | | | For Booting the DOS 3.30 Operating System from a floppy diskette. |
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http://thestarman.pcministry.com/asm/mbr/MBR_in_detail.htm
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| | master boot record format |
| | In extended Master Boot Record, this space of 446 Bytes is normally reserved for the boot code and remains empty. | | | All the 512Bytes of The Master Boot Record are Broken as follows, given in the Table: | | | Data Recovery with and without Programming [$ 69.00] |
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http://www.datadoctor.biz/Data_Recovery_Programming_Book_Chapter3-Page7.html
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| | Master Boot Record |
| | The occurance of any of these errors or (more commonly) the "Operating system not found" error, which indicates the MBR is corrupted, will require the intervention of partition recovery expertise in order to correct the problem. | | | The MBR code now displays "Invalid Partition Table" and hangs. | | | (value other that 0 or 80h found the active byte of a partition record) |
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http://bootmaster.filerecovery.biz/appnote4.html
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| | DriverHeaven.net - master boot record |
| | the Windows NT boot manager is implemented in a different place, and has nothing to do with the MBR. | | | would like to know what reasons there are as to how you loose the mbr is hardware or a software fault. | | | Oct 11, 2003 02:24 AM as for the problem, you can try making an XP custom boot disk. |
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http://www.driverheaven.net/printthread.php?t=28176&pp=100
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| | [No title] |
| | The Master Boot Record may need to be updated when: * An operating system other than MS-DOS is on the fixed disk. | | | So it would appear that everything from offset 0000h to 00ECh is the Master Boot CODE, and everything from 00EDh to the end of the sector (01FFh) is the Master Boot RECORD (aka partition table). | | | Mitch Ames FDISK /MBR MS-DOS 5.0 FDISK has an undocumented parameter, /MBR, that causes it to write the master boot record to the hard disk without altering the partition table information. |
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http://chanae.walon.org/pub/DOS/muf16.txt
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| | Master Boot Record - Lockergnome's Problem Solvers |
| | After going round and round with Symantec, They told me this issue can be caused if the Master Boot Record (MBR) is slightly damaged in such a way that the Windows Operating System can load properly and work. | | | Maybe Windows XP would be better for that program. | | | This feature is handy if you insert a floppy disk that contains a boot sector virus, but it can also be annoying when you are trying to repair/replace your current MBR. |
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http://help.lockergnome.com/index.php?showtopic=16884
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| | Workstation 2.0 - Master Boot Record Issue |
| | Choosing anything other than the MBR in that situation will lead to a fatal error that points to you to this page, or to an infinite loop. | | | The most commonly reported cause of this problem is the incorrect installation of LILO, the Linux boot manager. | | | VMware Workstation for Linux and Workstation for Windows NT and Windows 2000 will point you to this page if the virtual machine takes a fatal exception or an infinite loop just after reading the contents of the master boot record (MBR). |
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http://www.vmware.com/support/ws2/doc/mbr_ws_linux.html
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| | Master Boot Record Error |
| | I have a boot disk that will get me to a command line, so I could copy a new Master Boot Record, or add some boot program to fix this, but I don't know what to do. | | | I can't even go on my computer anymore, I am writing this from my old 98 computer. |
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http://www.ozzu.com/ftopic34793.html
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| | Remove the Partition Table |
| | The script is best run from a boot floppy diskette made with MS-DOS or IBM PC-DOS version 5.0 or later. | | | Creating a Boot floppy disk and running DEBUG | | | Use FORMAT A: /U/S to create the system floppy diskette. |
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http://www.concentric.net/~kofik/technic/dos/delmbr.htm
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| | Backup/Restore Master Boot Record |
| | which enables a binary image of the MBR or Boot Sector to be saved. | | | To create a DOS bootable disk just use the command "format a: /s" from a DOS or Win9x machine. | | | - prompts for a path and filename to save the MBR binary image. |
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http://www.windowsnetworking.com/kbase/WindowsTips/WindowsNT/AdminTips/Miscellaneous/BackupRestoreMasterBootRecord.html
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| | Master Boot Record - Lockergnome's Problem Solvers |
| | SOME AV programs write themselves into the boot sector for the initial boot scanning...... | | | Like what Patio said,,,,AVG does it's boot scan in 98, etc., by adding a line to the Autoexec.bat file. | | | The end results of every AVG Virus scan I run, it says "ok" except one which says: Partition table (MBR) change. |
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http://help.lockergnome.com/index.php?showtopic=40521
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| | No Master Boot Record? |
| | However, I think it's possible to have problems with your MBR, but still have it work. | | | If all else fails, you can re-construct an MBR from a floppy disk. | | | Forum overview » Software » No Master Boot Record? |
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http://www.ntcompatible.com/thread15395-1.html
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| | Fix master boot record |
| | There's a particular variant of a computer virus that delights in infecting the MBR. | | | It's a little program that runs when a computer starts up. | | | Make your computer more secure with Cyberwalker's new book |
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http://www.cyberwalker.net/columns/sep98/090398.html
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| | Réparer le MBR "Master Boot Record" |
| | Master boot record is the first sector of the disk that is accessed by you computer BIOS as soon as it boots up. | | | Assuming you are in Windows XP, you have to put WINDOWS XP CD in your drive and make it reboot next time in recovery console. | | | If you have ever installed two or more operating system, your ability to select an operating system is controlled by master boot record. |
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http://pages.infinit.net/lpaquin/astuces/ast052xp.htm
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| | Recovery Console |
| | It can be installed to a hard disk as a boot menu option or started from the Windows XP CD used for setup. | | | As discussed above, the Recovery Console may be installed to hard disk or started from the XP Installation CD. | | | If you don’t wish to perform the update, press [Esc] to interrupt the Dynamic Update process and use the existing setup files. |
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http://www.theeldergeek.com/recovery_console.htm
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| | Clearing the Master Boot Record |
| | This procedure goes 7 layers deep so no data will be recoverable. | | | This particularly applies when virus detection programs cannot eradicate the virus. | | | A cold boot is necessary this is done to clear the virus from memory and prevent it from writing to the disk. |
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http://www.softcom.net/users/fdamico/clear_mbr.htm
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| | MASTER Boot |
| | Home Page » Computers & Networking » Software » MASTER Boot |
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http://www.incollaboration.net/MASTER-Boot.html
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| | Rewrite Master Boot Record |
| | Boot the sick system with DOS boot disk containing DEBUG.EXE command. | | | If you have such a virus, use anti-virus software to remove the virus. | | | In such a case, replacement of the MBR will result in ALL your disk partitions and data being lost. |
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http://www.windowsnetworking.com/kbase/WindowsTips/WindowsNT/AdminTips/Miscellaneous/RewriteMasterBootRecord.html
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| | Repair Master Boot Record - Fix Master Boot Record Software |
| | Also find out what The Mechanic can do to troubleshoot disk boot failure or to recover lost data and Lost files. | | | If so, The Mechanic can evaluated and fix your Master Boot Record in just a few minutes. | | | If the master boot code cannot complete these functions, the system displays a message similar to the MBR error messages listed above. |
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http://www.highergroundsoftware.com/keywordpages/master-boot-record.htm
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| | Master Boot Record - nV News Forums |
| | With Win9x and FAT32 partitions, boot to a bootable DOS floppy. | | | What is the best way to go about repairing this and will I lose any/all of the computer's data? | | | I believe there may be a problem in the disk's MBR. |
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http://www.nvnews.net/vbulletin/showthread.php?t=15084
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| | Restoring Master Boot Record ? - LinuxQuestions.org |
| | (In my desktop PC, his had happened before and using the windows boot up floppy disk, I had run "fdisk /mbr" and had restored my MBR. | | | But in my laptop, I dont have a floppy drive. | | | Trying to run Linux on a handheld or mobile device? |
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http://www.linuxquestions.org/questions/showthread.php?s=&postid=1645361
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| | fix Master Boot Record? - Emuforums.com |
| | Chances are these tools will work faster than the standard Win98 boot disk and has a lot more features. | | | is there any good way to get back the data and fix the mbr? | | | After that, if you reboot your computer the boot control will be passed to the OS loader, situated on the first primary active partition on hdd0. |
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http://forums.ngemu.com/software-discussion/38684-fix-master-boot-record.html
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| | Master Boot Record |
| | Using this information, the system finds out which hard disk drive, and which partition, is used to boot the system. | | | SafeGuard Easy can recognize modifications to the MBR and respond to them in various ways, such as displaying a menu and letting the user select an specific action to occur after changes have been made. | | | For this reason the MBR is a popular point of attack for viruses because the BIOS executes the machine code it contains right at the start of the booting process, before the operating system has been loaded. |
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http://www.utimaco.us/products/easy/manual/1-083.html
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| | - Master Boot Record |
| | Alot of folks multibooting are doing so with some form of Unix as well, and since *x isn't bound to exactly the same paritioning rules, and that needs to be kept in mind when planning a multiboot system. | | | Isn't that where the MBR and Partition table are located? | | | The Master Boot Record resides at the beginning of the first harddrive in the system. |
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http://www.techexams.net/forums/viewtopic.php?t=1143
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| | Define Master Boot Record - a Whatis.com definition - see also: MBR |
| | The Master Boot Record (MBR) is the information in the first sector of any hard disk or diskette that identifies how and where an operating system is located so that it can be boot (loaded) into the computer's main storage or random access memory. | | | In turn, that record contains a program that loads the rest of the operating system into RAM. | | | In addition to this table, the MBR also includes a program that reads the boot sector record of the partition containing the operating system to be booted into RAM. |
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http://searchsmb.techtarget.com/sDefinition/0,,sid44_gci214086,00.html
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| | [No title] |
| | Every time you turn on your computer, the BIOS loads and executes a small program, which resides in the very first sector of the first harddisk. | | | The boot sector contains operating system specific code, which loads and executes the system files of the operating system. | | | MasterBooter works by replacing the program in the MBR with its own loader code that you can configure, so you can select from any installed operating systems. |
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http://www.masterbooter.com/support/technikalinfo_en.html
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| | Tutorial: Clearing the Master Boot Record (MBR) |
| | The reason for all of the above is that they forgot to uninstall LILO, which would have written out the original MBR; as it is, the boot code in the MBR is trying to pass control to the Linux kernel - and that's no longer there. | | | ...they've run into the classic "fried MBR" problem: install Linux, realize that Windows will screw up the boot record, delete the Linux partition, try to install Windows first... |
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http://librenix.com/?inode=597
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| | Harddisk Partitioner PartitionStar - Open Master Boot Record |
| | You may load the content of the master boot record in its entirety from a previously created binary file (*.bms). | | | In this case, you should make sure that the master boot record contains the bootstrap as well as the partition table and is written in its entirety from the partition table to the file of the master boot record. | | | Should the restoration of the bootstrap be absolutely necessary, the following process might be helpful: |
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http://www.star-tools.com/partitionstar/english/manual/sopenmbr.html
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| | Master Boot Record |
| | This is a program located in the master boot sector of the disk. | | | It contains the booting code and the partition table. | | | No part of this Encyclopedia may be reproduced, transmitted or used in any other way in any form or by any means without the prior permission. |
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http://ve.nod32.ch/system/mbr1.php
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| | Master boot record for XP |
| | I've been doing a reinstall to both my hard drives with XP Pro and after formatting and installing to the one, I try to boot from it and get an "invalid partition table" error. | | | Master boot record for XP You're browsing the Windows NT / 2000 / XP / 2003 forum | | | Discussion about: Get tech support for the latest Microsoft operating systems. |
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http://www.daniweb.com/techtalkforums/thread25548.html
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| | Master Boot Record |
| | So...can u guys tell me how to set it back to where windows xp had it before i have linux or is there a program i can use or something so that i can use my windows xp normally when i remove my linux partition? | | | Lost my start-up menu on XP/98 Dual boot system | | | I want to uninstall mandrake but if i do that then the mbr will be messed up and i couldn't log back into xp. |
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http://www.softwaretipsandtricks.com/forum/windows-xp/7644-master-boot-record.html
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| | Vilma Software Hal - MBR |
| | (446 bytes) - a small program witch are executed at the startup to boot the operating system. | | | The Master Boot Record is located at the physical beginning of a hard disk. | | | - to guard against booting an MBR when it has never been set up, the BIOS checks for a special pattern (55AA) in the last word of the MBR (immediately following the partition table). |
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http://www.vsft.com/hal/mbr.htm
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