Where does GRUB reside ?
- From: "Emerald Saint" <xp.student@xxxxxxxxxxx>
- Date: Sun, 1 Jun 2008 17:22:21 -0700
I had a Windows Vistsa system that was broken, and I had also erased the
boot code from the MBR - but not the partition table. The boot code is
proprietary to HP Pavilion. There was no other boot code I could write to
the MBR that would get so much as an error message out of the broken Vista
installation. And I had permanently lost the proprietary code.
I installed Ubuntu on another partition. Ubuntu worked fine, but I later
erased the Ubuntu partition. Then I got ahold of a CD that could possibly
repair my broken Vista system. I ran the CD and was able to get the Vista
up and running again. I thought I might have gotten the proprietary boot
code back, so I looked at it with a disk editor and found it now has GRUB
boot code in the MBR. If I hadn't put Ubuntu on the computer Vista would
still be inaccessible !!!
Too cool. I did some research and found there are ways to get great dual
boot capability using GRUB. Now I am interested to know where GRUB resides.
With my disk editor I see there is about 18 sectors of GRUB in the first
track (head 0) on the hard drive. But there is some more stuff on the
second track (head 1) that looks like it is also GRUB. With all that real
estate it seems like GRUB probably doesn't use the boot flag in the
partition table to pick the partition for booting.
I do a lot of tinkering with the drive sometimes for backing up data and for
copying partitions and just for experimentation. I am interested to know
what areas of the drive are used by GRUB - so I copy them when necessary and
so I don't accidentally over write or erase part of GRUB.
TIA.
.
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