 | | | MBR | MBR 2005-05-18 - By Ed Wilts
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On Wed, May 18, 2005 at 07:18:40AM -0400, Burke, Thomas G. wrote:
> doing an fdisk /mbr shouldn't hurt you physically, in fact it is quite
> useful for when the master boot record gets corrupted. Unfortunately,
> it wipes out lilo in the boot record, so you can't boot without a
> disk.
It wipes out both grub and lilo but your first sentence is also true -
it doesn't hurt you physically. I did an fdisk /mbr when I was
studying for my RHCE to see how long it would take me to recover (not
long). After you've wiped out the mbr, boot into rescue mode and do a
grub-install /dev/hda and you're done.
> If you have a disk that will allow you to boot to the normal OS & have
> everything mounted, do the following:
> 1) fdisk /mbr
You can do this from a Windows boot floppy.
> 2) reboot into single user mode
You can't boot into single user mode after wiping out the mbr - it's the
master BOOT record that you've just destroyed.
--
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts@(protected)
Member #1, Red Hat Community Ambassador Program
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