Hii all,
I've just installed a Windows OS & it took away my pre-installed fedora.
This,as I believe, is due to the fact that Windows bootloader doesn't support LInux .
So my fedora installation is intact but can't be displayed while booting.
Hence , I installed a software named as Easybcd on my XP setup & try to configure the lost Fedora, but all my efforts were in vain as while booting time when i click on the Fedora it opens up a black screen with the tag grub>.As i don't know to work on Grub bootloader,it becomes hardly impossible for me to retain back my data ????
Please suggest the possible ways to retain my feodra back !!!

Thanks for the tutorial,I downloaded live cd & then installed Grub loader & it works nicely.
Again thanks for the tutorial.
Before installing Grub i made some changes & re-installed Win XP but it took away my newly installed Windows 7.
As of now, Grub is not showing my installed Windows 7.
What to do now???
Its menu is also not showing the Windows 7 system
Thanks again

Post the output of /boot/grub/grub.conf and fdisk -l.

If you go to the microsoft site (or just google this problem) you will find that installing any windows version prior to vista after vista will create problems with booting. I assume windows 7 beta has the vista bootloader and the microsoft site has some explanations as to how to recover from this problem.

The best tutorial i had ever read of ubuntu , thanks man

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x13f413f3

Device Boot Start End Blocks Id System
/dev/sda1 * 1 1275 10241406 7 HPFS/NTFS
/dev/sda2 1276 19456 146038882+ f W95 Ext'd (LBA)
/dev/sda5 1276 4487 25800358+ 7 HPFS/NTFS
/dev/sda6 4488 6399 15358108+ 83 Linux
/dev/sda7 6400 11498 40957686 7 HPFS/NTFS
/dev/sda8 11499 13410 15358108+ 7 HPFS/NTFS
/dev/sda9 13411 16597 25599546 7 HPFS/NTFS
/dev/sda10 16598 18637 16386268+ 7 HPFS/NTFS

& its denying permission for /boot/grub/grub.conf

As I moved my eyeballs through google they told me to install install vista bootloader using Easy BCD.
But the problem is Grub should show it in booting time,which is not being done.
Could u state the possible reason???

I don't do this Windows thing anymore,so I don't know will Vista home,basic,ultra,ultimate,whatever kick XP professional,no professional from the boot menu, or will Windows 7 do something to Vista or XP or not and I think that even in the Microsoft they can't tell you the answer,but I've seen this bootloader that might do what you want.

http://support.microsoft.com/kb/919529

Their explanation is incompatible bootloaders? Even though they wrote/created both they couldn't figure out how to make them work together. After seeing what one needs to do here, I'm thankful for Grub. Maybe if they spent more money/effort on programmers than on advertising and lawyers they wouldn't have this problem

As the saying goes we work in airconditioners, hence we need no windows to work on..
I am in no mood to shift my energy/efforts to install Vista bootloader & give up Fedora

Thanks for the link ..)

Grub doesn't boot any windows OS, it chainloads or basically points to where the windows bootloader should be and then it is up to windows to boot.

Your fdisk output shows one hard drive. It shows one ntfs primary partition and 5 windows logical partitions. Windows won't boot from a logical partition unless there is another primary partition. In other words, the primary partition needs to have the bootloader information to boot the OS on the logical. I believe you have xp on the primary and I don't even know if you can boot vista with xp bootloader?? Doubt it.

I've never used xp or vista so the only suggestion I could make is go to support.microsoft.com and do a search.

That was a mistake. That is a M$oft problem, not a grub problem.
Installing a later version of Windoze to dual boot with an earlier version replaces the loader code, and includes boot entries for both. There is only one set of (boot) loader code.
Subsequently installing the prior version again loses the (Windoze) dual boot as it doesn't recognise the later version is present on the disk. There is still just one copy of the loader code.
Grub chainloads to whatever is there, but you can't have separate entries for the two Windoze systems, because there is only one set of loader code to refer to.