problem booting fedora and xp

[bilal_jan]

hello everyone
i installed windows on my PC and after installing windows xp i cant boot my fedora core 8.
first i tried the following command to install grub

chroot /mnt/sysimage
grub-install /dev/sda

but things went wrong after rebooting when i select to boot winxp i got following error

Booting windows xp
rootnoverify (hd0,0)
chainloader +1
Grub Loading stage 1.5
GRUB loading , please wait....
Error 18

now when i select fedora i am getting following error

booting 'feora (2.6.23.1-42.fc8 ) '
root(hd0,8 )
filesystem type is ext2fs, partition type 0x83
kernel /boot/vmlinuz-2.6.23.1.-42.fc8 ro root=LABEL=/ rhgb quiet
Error 15: File not found

i m struck nor i can boot xp nor fedora

[devils casper]

Boot up from LiveCD of any Linux distro and execute fdisk -l command. Post output here.

su -
fdisk -l

[bilal_jan]

here is output of fdisk -l

 DEVICE          BOOT       START    END      BLOCKS       Id   System
/dev/sda1       *          1        1275    10241406      7    HPFS/NTFS 
/dev/sda2                  1276     9729    67906755      f    W95 Ext'd 
/dev/sda5                  1276     4080    22531131      7    HPFS/NTFS
/dev/sda6                  4081     6885    22531131      b    W95 FAT32
/dev/sda7                  6886     8198    10546641      b    W95 FAT32
/dev/sda8                  8199     8322    995998+       82   Linux swap/ solaris
/dev/sda9                  8323     8975    5245191       83   Linux 
/dev/sda10                 8976     9729    6056473+      83   Linux 
  

[devils casper]

Boot up from Windows Installation CD, select Repair and execute fixmbr command. Does Windows OS boot up by default on reboot?

[bilal_jan]

i ran fixmbr ... now when i boot my pc i am getting this error

GRUB GRUB aGRUB DGRUB Hard Disk Error

capser i am unable to access my whole hard drive

[devils casper]

GRUB should not appear on executing fixmbr command. Something is wrong with Hard disk.
Try to execute fixmbr command again. In case it doesn't work, backup data using LiveCD.
We have to check if Hard disk is working fine.
Execute this

hdparm -I

Does it display correct info of your harddisk?

[bilal_jan]

when i first ran fixmbr command i got this message

this computer appears to have a non-standard or invalid master boot record
FIXMBR may damage your partition tables if u proceed.
this could cause all the partition on the current hard disk to become inaccessible.
if you are not having problem accessing your drive, do not continue.
are you sure you want to write a new MBR?

i continued with yes
after reboot i got this error

GRUB BRUB aGRUB DGRUB HARD DISK error

[rokytnji]

At the risk of sounding ignorant because Devilscasper knows his business. have you tried fixing boot with Super Grub Disk Homepage

[devils casper]

At the risk of sounding ignorant because Devilscasper knows his business. have you tried fixing boot with Super Grub Disk Homepage

I was going to suggest SuperGRUB CD only. It might sort out problem but it looks like something is wrong with either Harddisk or Partition Table.

[bilal_jan]

i tried steps at
http://http://www.supergrubdisk.org/...Grub_Disk_USB.
but when i boot with usb i got following error
Invalid system disk
Replace the disk and then press any key