Hi, I can confirm the problem. This is the sequence that leads to the problem:
* Install Lenny 5.0.2 This will automatically use grub2, the system is perfectly bootable. * Add Squeeze to the sources.list After updating the package list the packages grub-common and grub-pc are shown as updateable. * Update grub-common and grub-pc During the update a requestor shows up in the terminal window of Synaptic asking for the device to install grub into. Here it is /dev/sda3. The requestor pops up again, this time I only hit the enter key as there is only one target to install to. The installation process continues then with no apparent error. * Reboot the system Now the system cannot boot any longer. Instead of booting grub displays "error: unknown command linux". * Use the grub editor at startup Here I replace the line containing the literals search --fs-uuid with insmod "linux" and the system successfully boots up. But this is only a temporary workaround to get into the system again. * Permanent solution Something is wrong with using UUIDs in connection with booting, because uncommenting the according line in /etc/defaults/grub: GRUB_DISABLE_LINUX_UUID=true and running update-grub changes the file /boot/grub/grub.cfg. The line with "search ... --fsuid ..." is still present, but the line with "linux ..." has changed to reflect /dev/sda3 as boot device. Therefore the presence of the line containing "search ..." or the length of the line do not seem to be a problem, but using the UUID is. Some additional informations on the setup: Hardware is a MacBook Pro, with rEFIt 0.13 as boot manager for dual boot. Partitions are: EFI Partition is /dev/sda1 Mac OS X is in /dev/sda2 /root is in /dev/sda3 (grub is installed into this partition) /home is in /dev/sda4 Regards, Adolf Winterer -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org