On Vi, 21 nov 14, 14:43:11, Ross Boylan wrote: > > grub needs to know where it should jump to. I don't know how it can > figure that out from inside a chroot. For example, say /boot inside > the chroot is mounted from sdb2. To the chroot, it's just part of the > filesystem. How is grub-install to figure out that, when it loads > from the start of the disk, it should look for the grub directory (not > /boot/grub) of the appropriate partition? The only possibility I can > think of would be that it looks in /etc/fstab.
As far as I understand it you must reproduce the to-be-booted system in the chroot as much as possible. Assuming /dev/sdc2 should be your root partition and /dev/sdc1 your /boot this should work mount /dev/sdc2 /chroot mount /dev/sdc1 /chroot/boot mount -o bind /dev /chroot/dev mount -t sysfs sysfs /chroot/sys mount -t proc proc /chroot/proc chroot /chroot grub-install /dev/sdc # installing to MBR If the kernel in the new system is significantly different to the one you're running from this might lead to problems, so as soon as you manage to boot run another 'grub-install /dev/sdc'. Hope this helps, Andrei -- http://wiki.debian.org/FAQsFromDebianUser Offtopic discussions among Debian users and developers: http://lists.alioth.debian.org/mailman/listinfo/d-community-offtopic http://nuvreauspam.ro/gpg-transition.txt
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