OS: Redhat Linux RHEL3
HARDWARE: IBM THINKPAD
PROBLEM: Dual-boot XP/Linux, XP partition table issue, will not boot.

Tried:
[root@heden root]# sfdisk -d /dev/hda | sfdisk --no-reread -H255 /dev/hda
Warning: HDIO_GETGEO says that there are 240 heads

Then tried w/-H240:
[root@heden root]# sfdisk -d /dev/hda | sfdisk --no-reread -H240 /dev/hda --force

Returns the following:

Disk /dev/hda: 10337 cylinders, 240 heads, 63 sectors/track
Old situation:
Units = cylinders of 7741440 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/hda1 * 7+ 886 880- 6652768+ 7 HPFS/NTFS
/dev/hda2 8349 10335 1987 15021720 1c Hidden Win95 FAT32 (LBA)
/dev/hda3 * 0+ 6 7- 52888+ 6 FAT16
/dev/hda4 887 8348 7462 56412720 f Win95 Ext'd (LBA)
/dev/hda5 3123+ 4477 1355- 10243768+ b Win95 FAT32
/dev/hda6 7986+ 8348 363- 2744248+ 7 HPFS/NTFS
/dev/hda7 4478+ 7985 3508- 26520448+ 83 Linux
/dev/hda8 887+ 1024 138- 1043217 82 Linux swap
Warning: bad partition start (earliest 67707362)
cannot build surrounding extended partition

sfdisk: bad input


Any suggestions ?

What does your /boot/grub/grub.conf (or /boot/grub/menu.lst if you're using that) look like for the XP entry? Most of the dual boot problems I've seen posted on LQ in re XP involve to the grub config for XP.

Pretty much like this :

title Microsoft Windows XP Professional
rootnoverify (hd0,0)
chainloader +1


I've also tried:


title Microsoft Windows XP Professional
rootnoverify (hd0,0)
chainloader +1
makeactive
boot