Ok, I've tried substituting /dev/sdb2 and /dev/sda2 for the root, nothing changes. When I installed the F11 OS on sdb, I asked it to install the bootloader on sda to overwrite my existing bootloader, this didn't work, so I rescued the F10 OS and from there I reinstalled the bootloader onto /dev/sda. This got F10 working again. I mounted dev/sdb1 and copied the lines out of the F11 grub.conf into the F10 (/dev/sda1) grub.conf then reinstalled the bootloader (grub-install /dev/sda). F10 boots, but F11 doesn't., it gives me an Error 17. Here's the F10 grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd1,0) # kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/sdb default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Fedora (2.6.27.30-170.2.82.fc10.i686) root (hd0,0) kernel /vmlinuz-2.6.27.30-170.2.82.fc10.i686 ro root=/dev/VolGroup00/LogVol00 rhgb quiet vga=0x318 initrd /initrd-2.6.27.30-170.2.82.fc10.i686.img title Fedora 11 64-bit root (hd1,0) kernel /vmlinuz-2.6.29.4-167.fc11.x86_64 ro root=UUID=7ba6f364-68c2-4dad-a54e-18c3464b0eb5 rhgb quiet initrd /initrd-2.6.29.4-167.fc11.x86_64.img title Other rootnoverify (hd2,0) chainloader +1 And here's the F11 grub.conf default=0 timeout=5 splashimage=(hd1,0)/grub/splash.xpm.gz hiddenmenu title Fedora (2.6.29.4-167.fc11.x86_64) root (hd1,0) kernel /vmlinuz-2.6.29.4-167.fc11.x86_64 ro root=UUID=7ba6f364-68c2-4dad-a54e-18c3464b0eb5 rhgb quiet initrd /initrd-2.6.29.4-167.fc11.x86_64.img title Other rootnoverify (hd2,0) chainloader +1 title Fedora 10 rootnoverify (hd0,0) chainloader +1 Thanks for any advice. Jim <div class="gmail_quote">2009/9/20 Paulo Cavalcanti <<a href="mailto:promac@gmail.com">promac@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="gmail_quote"><div class="im">On Sat, Sep 19, 2009 at 1:44 PM, g <<a href="mailto:geleem@bellsouth.net" target="_blank">geleem@bellsouth.net</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div>James Allsopp wrote: > Hi, > I've got a machine with three hard-drives in it. two sata and one ide. I've > a fedora 10 (upgraded from 9) on the first sata drive, and I've installed > fedora 11 on the second sata drive. The machine boots off the first of these > drives and the ide one contains windows. I copied the lines out of grub.conf > on the f11 disk, and copied them to the grub.conf of the first disk, and > reinstalled. However, f10 boots fine, f11 doesn't boot. and grub gives me an > error 17. </div> </blockquote></div><div> If you are using chainloader for F10, grub has to be installed on F10 /boot partition. On the other hand, grub has to be installed on the mbr of the F11 disk. But you have to check on the BIOS, which drive is being used for booting. It has to be the one with grub on the mbr (F11 - hd1). </div></div> -- Paulo Roma Cavalcanti LCG - UFRJ -- fedora-list mailing list <a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a> To unsubscribe: <a href="https://www.redhat.com/mailman/listinfo/fedora-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-list</a> Guidelines: <a href="http://fedoraproject.org/wiki/Communicate/MailingListGuidelines" target="_blank">http://fedoraproject.org/wiki/Communicate/MailingListGuidelines</a> </blockquote></div>