A Bug in Fedora Core GRUB intall causes the disk geometry to be modified from LBA to CHS Format.The partition table now has both CHS & LBA value.Linux ignores CHS values but Windows messes up failing to boot.
I'm experiencing the same trouble,due to which i'm not being able to boot windows,however linux can still boot.
original disk geometry had 255 number of heads initially and was changed to 16 after the partition was corrupted by Fedora
None of the solutions suggested to the problem:
Setting BIOS setting from auto to LBA or
$ sfdisk -d /dev/hda | sfdisk --no-reread -H255 /dev/hda
is working in my case.
So, the only option remaining to me is to clear the MBR & partition table & rebuilt them again.
i plan to clear MBR using:
$ dd if=/dev/zero of=zero.img bs=512 count=1
$ dd if=zero.img of=/dev/hda
& rebuilt the partition table & MBR
Can i do this i rebuilt & restore original partition table without loosing valuable data & how?How to make a backup of partition table & MBR so that i can restore them if above process fails?
Thanks in Advance