<div class="gmail_quote">On Sat, Nov 21, 2009 at 5:39 AM, Erik P. Olsen <<a href="mailto:epodata@gmail.com">epodata@gmail.com</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 class="im">On 20/11/09 23:50, Mikkel wrote: > Erik P. Olsen wrote: >> Can a 64-bit system be chainloaded from a 32-bit? >> > What do you mean by chainloaded? If you are talking about a Grub, > then it is the same for a 32 or 64 bit version of Fedora. Grub is a > boot loader that is independent of the OS installed. (Except for > storing its files.) > </div>My setup is fairly simple. I have a running fedora 10, 32-bit version. I have build a 64-bit fedora 12 system which I want to chainload using grub from F10. So far I have only got the answer "Geom error" and I thought that might be due to the different architectures. <div><div></div><div class="h5"> </div></div></blockquote><div> In my case, I had to reinstall grub on the /boot partition of the chainloaded Fedoras. First, find out where is /boot: su - grub grub>find /grub/stage1 (hd0,0) (hd1,1) (hd2,0) grub>quit Then, install it on the /boot partition: su - grub root (hd2,0) setup (hd2,0) quit </div></div> In my case, I have three disks with F10 x86_64 (hd2), F8 x86_64 (hd1) and RHEl5 (hd0). grub is installed on the mbr in hd0 (my RHEL main disk). The other two have grub on /boot, the way I showed you. This is my RHEL 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 (hd0,0) # kernel /vmlinuz-version ro root=/dev/sda2 # initrd /initrd-version.img #boot=/dev/sda default=2 timeout=15 splashimage=(hd0,0)/grub/splash.xpm.gz #hiddenmenu title Red Hat Enterprise Linux Server (2.6.18-164.6.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.6.1.el5 ro root=LABEL=/ quiet initrd /initrd-2.6.18-164.6.1.el5.img title Red Hat Enterprise Linux Server (2.6.18-164.2.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.2.1.el5 ro root=LABEL=/ quiet initrd /initrd-2.6.18-164.2.1.el5.img title Fedora 10 rootnoverify (hd2,0) chainloader +1 title Fedora 8 rootnoverify (hd1,1) chainloader +1 title Windows XP map (hd0,0) (hd1,0) map (hd1,0) (hd0,0) rootnoverify (hd1,0) chainloader +1 title Memtest86+ (2.11) root (hd0,0) kernel --type=netbsd /elf-memtest86+-2.11 The disk with F8 will receive F12 soon, and the disk with F10 will receive F14, and so on... I hope this helps. -- Paulo Roma Cavalcanti LCG - UFRJ