Hi everybody,
I have a bit old RHL 8 with Win Me dual boot.few days earlier in my CD Rom 'Bootable XP' Cd was inserted accidentally I forgot it and restaretd.XP set up just staretd.Then I ejected the Cd.But restarting again dual boot option didn't came.

so, I booted by linux bootdisk and in hurry run
#grub-install /dev/hdb1 (it is actually my C drive) instead of
# grub-install /dev/hdb. Thereafter from the dual boot prompt Linux is running fine but when I select Dos it stops with 'GRUB Geom Error'.

Then I have run '# grub-install /dev/hdb'.I have tried to rebuilt the Boot sector by TestDisk utility. I have also booted from dos
boot disk and run fdisk/mrb to place windows boot loader in MBR.The dual boot screen didn't came but the Error came again.I have serached google but nothing effective came out.Some suggested using Sfdisk.
Plz can any one give exact solution for that.any tool available for recovery ??.I do not want reinstallation.

bye
dtm

Those are both very old operating systems. "fdisk /mbr" only updates the MBR, not the boot sector. Later windows variants (Win2K and XP) allow you to get into a recovery console where you can attempt "fixboot" - don't know if this is available from ME as I've never used it.
Note that this often doesn't fix the problem anyway.
Writing grub onto the partition probably overwrote more sectors than can be sensibly recovered. Although that message makes it sound like the attempted recovery didn't work at all.

Older versions of Windoze used to offer the option of a re-install of just the "system" component. Basically the executables under the "system{32}" directory - left all your personal configuration files alone.
Again I don't know if ME offers this, but I reckon you are going to have to attempt a (ME) re-install.

Thanks syg00,
You are correct fdisk/mbr don't rebuild boot sector.My problem was just that.This is why I booted from dos boot disk and run 'sys c:', which placed the io.sys & msdos.sys files on C drive and also rebuild the Win Me boot sector. Now It is working fine.

regards
dtm.

Whoa - that's a DOS command (obvious I know ...).
Wouldn't have expected that to work.