But I could boot it again by simply using an older version of grub _without_ any change to the disks. Additionaly my root is entierly above cyl. 1023 as you can see here:
$sudo fdisk -l Disk /dev/hda: 80.0 GB, 80026361856 bytes 255 heads, 63 sectors/track, 9729 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 192 1542208+ b W95 FAT32 /dev/hda2 193 714 4192965 b W95 FAT32 /dev/hda3 715 975 2096482+ b W95 FAT32 /dev/hda4 976 9729 70316505 f W95 Ext'd (LBA) /dev/hda5 976 1913 7534422 83 Linux /dev/hda6 1914 2015 819283+ 82 Linux swap / Solaris /dev/hda7 2016 3008 7976209+ 83 Linux /dev/hda8 3009 8575 44716896 83 Linux /dev/hda9 8576 9729 9269473+ c W95 FAT32 (LBA) $LANG=C df -h Filesystem Size Used Avail Use% Mounted on /dev/hda7 7.5G 4.6G 2.6G 65% / varrun 189M 100K 189M 1% /var/run varlock 189M 0 189M 0% /var/lock procbususb 10M 140K 9.9M 2% /proc/bus/usb udev 10M 140K 9.9M 2% /dev devshm 189M 0 189M 0% /dev/shm lrm 189M 20M 170M 11% /lib/modules/2.6.17-11-generic/volatile /dev/hda8 42G 24G 17G 60% /home -- Regression: grub - Error 18 sometimes since edgy https://launchpad.net/bugs/79578 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs