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Old 08-24-2012, 12:19 AM   #1
imayneed
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Registered: Jul 2012
Distribution: Mint 9 Gnome, Mint 13 KDE
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How to fix mbr in linux or gparted, etc. (for a mbr partitioned disk)


I am used to using gpt disks, therefore I was using gptsync to fix mbr.

I do not know if gptsync can fix mbr in mbr disks, which I think not.

I am wondering if there is any command that I can use like gptsync to fix mbr of mbr disks.

Code:
sudo gptsync /dev/sdX
has always solved my problems on gpt disks.
But I don't know what can solve my problems in mbr disks.

And gptsync works if there is any grub or not in the drive.
That is the kind of solution I am looking for, even if there is no grub, can mbr be updated?
In gpt disks, whenever I have a problem, I can easily delete the first 200 MB Protective Partition and run gptsync, and everything would be fine.
Is there any solution like this for MBR disks?

Thanks.

Last edited by imayneed; 08-24-2012 at 12:34 AM.
 
Old 08-26-2012, 09:37 AM   #2
schneidz
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there is grub-install. if you got a backup of the partition table this mite work:
Code:
dd if=mbr.bak of=/dev/sdb bs=512 count=1
 
Old 08-26-2012, 09:50 AM   #3
smallpond
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Surely this can't be a common problem. What the heck are you doing that you need to recreate the mbr that often?

Anyway, the disk label can be written with parted. If you need a boot loader as well, then use grub-install.

gptsync creates a disk label (mbr partition table) from a gpt. If you don't have a gpt, and your mbr is corrupted, parted can find your partitions with "rescue" mode.
 
  


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