I would mount all of the file systems and them run grub-update to make a new grub settings/config file with all of your OSs in Jacob Mansfield Programmer <div class="gmail_quote">On 18 October 2010 19:47, NoOp <<a href="mailto:glgxg@sbcglobal.net">glgxg@sbcglobal.net</a>> wrote: <blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">On 10/17/2010 06:35 PM, Tapas Mishra wrote: > On Mon, Oct 18, 2010 at 12:29 AM, ms... <div class="im">>> As far as I know there is no magic file of this kind -grub takes its >> information from its grub configuration file. Partitions are just >> partitions -system partitions will contain their own OS files, but they >> become "owned" by an OS just when the OS boots. </div>... <div class="im">> > <a href="http://sourceforge.net/projects/bootinfoscript/" target="_blank">http://sourceforge.net/projects/bootinfoscript/</a> > </div>Exactly. That will tell the OP what is installed where. Example: sda1: _________________________________________________________________________ File system: ntfs Boot sector type: Windows XP Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: /boot.ini /ntldr /<a href="http://ntdetect.com/" target="_blank">NTDETECT.COM</a> sda2: _________________________________________________________________________ File system: ntfs Boot sector type: Windows XP Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: sdb1: _________________________________________________________________________ File system: ext4 Boot sector type: Grub 2 Boot sector info: Grub 2 is installed in the boot sector of sdb1 and looks at sector 4785455 of the same hard drive for core.img, but core.img can not be found at this location. Operating System: Ubuntu 10.04.1 LTS Boot files/dirs: /boot/grub/menu.lst /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img sdb2: _________________________________________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sdb5: _________________________________________________________________________ File system: swap Boot sector type: - Boot sector info: <div> <div></div> <div class="h5"> -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </div></div></blockquote></div>