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Over the past few days, some users have reported to us that they have had experience with the dd copy boot sector.
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Does dd copy boot sector?
To copy the MBR in simple terms, use the dd command. dddemand works on all Linux distributions as well as other UNIX-like operating systems. The Master Boot Record (MBR) is considered to be a 512-byte boot sector, which should be the first sector of a spanned volume of an almost impossible disk.
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Does dd overwrite MBR?
This dd will be able to write to the entire disk if your organization allows it to run (so it will probably take a while). Something really fun. dd bs=512 count=50 if=/dev/zero of=/dev/sda will be enough to initially overwrite all 50 sectors, including the MBR partition table and the underlying GPT.
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Thanks to the old code, I use dd to save and restore (parts of) the boot sector after extracting the system ISO to disk (from the Thrive CD).< /p>
With the following command, I save the MBR (the first 446 bytes of everything except the partition table):
How do you clone using dd?
Make sure the source and destination disks have the same disk geometry.Become a superuser.Create this /reconfigure file on your computer so that the system normally recognizes the need to add a cloned drive when it restarts.Turn off your gadget.Connect the cloned drive to a specific system.Start the system.
dd if=/dev/sda of=/mnt/mbr.bin bs=446 count=1
Then my friends and I will restore the disk’s .iso file, and then use the following sequence to restore the boot sector:
dd if=/mnt/mbr.bin of=/dev/sda bs=446 count=1
Now that I expand on the issue, I ONLY bought an installed Windows XP before purchasing it, and so AFTER using the above method, the following makes me choose between booting Ubuntu and a new Windows XP project, I think I think something is seriously wrong .
My question is, are these two commands enough to save the boot sector later and then restore it?
asked December 26, 2015 at 2:45 pm.
How do you fix a boot sector on a hard drive?
Boot from original installation DVD (or recovery USB)On the Welcome screen, click Repair your computer.Select Troubleshoot.Select Command Prompt.When the command prompt loads, enter the Audience commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.
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