ok
from botable flopy of windows--indsert it
write fdisk /mbr
then grub will be deleted
& thern from, if u have XP , windows format the drive. (XP shows that drive as unspecified in Disk mngmt)
in 98u can format by format command
First of all he hasnt mentioned that he is using grub as a boot manager.
I think he reinstalled windows which replaced the mbr with its own.
N he just wants to recover back the hdd space used by the linux partitions
which r not visible in windows.
So no need for fdisk/mbr.
you said 'in 98u can format by format command'
I 98 fdisk will not show the linux partitions so if the partition is not listed
how can it be formatted.
'What could be the reason for hanging during installtion '
Most newer linux distros will need atleast 128mb ram .
Hence the system hanging problem.
Try installing an older version of redhat like redhat6 or 7.
Or when u boot with the linux cd do not go for the gui during
the installation go for the expert mode without the gui.
ie. use the manual installation in the command prompt.
It is very powerfull and costomisable but not very user friendly for
newbies.This option consumes minimal ram during installation unlike
the gui mode which is resource hungry.
If you have only 64 mb ram then do not install X windows package.
Instead use the shell .
It is much more powerfull than X(ie kde,genome etc) and also the shell
is very light on resources. Create a dedicated swap partition of atleast 256 mb.
Your system will run fine.
However if u do not want linux n r running only win98 then just format
the linux partitions to fat32 in partition magic.
But mate only 64 mb of ram is a no no.
Atleast upgrade to min.128 mb.