On 10/03/2010 03:33 PM, Richard Kettlewell wrote: > Package: grub-pc > Version: 1.98+20100804-5 > > My unstable/sid system failed to boot, with (IIRC) "GRUB GRUB hard > disk error" displayed after the BIOS. It had previously been booting > just fine with grub-pc (after upgrading from lenny). There might have > been kernel upgrade since the last successful boot, I couldn't say for > sure. > > In at attempt to repair it I booted off an Ubuntu karmic live CD and > chroot'd into the installed system. I check device.map and it looked > correct. I ran grub-install --force /dev/sda (and /dev/sdb, not that > the BIOS tries to boot off that disk anyway). I used --force because > the partition layout on this machine requires it. --force /dev/sdb wouldn't work in any case. Previously it created broken install now it complains and aborts. --force relies on FS not reordering blocks, an assumption which is false and make break unexpectedly. Another vector of the problem is that you run grub-install yourself where as in blocklist installs it should be rerun after every update (sudo dpkg-reconfigure grub-pc) > > I then ran apt-get dist-upgrade. This included a kernel upgrade. > > The next attempt to boot also failed, but with just "GRUB" appearing > after the BIOS. > > I used the live CD in the same way as above, except without any > upgrading, and re-ran grub-install. > > After this, attempting to boot worked fine. > > Sorry this isn't much to go on! At a wild guess the kernel upgrade is > botching some grub-related step, perhaps that only matters when > blocklists are in use. > > ttfn/rjk > > > > _______________________________________________ > Pkg-grub-devel mailing list > pkg-grub-de...@lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/pkg-grub-devel >
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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