Hi Karsten, On Wed, 15 Jan 2014 10:35:55 +0100 Karsten Malcher <deb...@dct.mine.nu> wrote: > Calling os-prober only give this information: > # os-prober > /dev/sda2:Debian GNU/Linux (7.2):Debian:linux > /dev/sda3:Debian GNU/Linux (jessie/sid):Debian1:linux
For type "linux" os-prober calles linux-boot-prober next with the partition as a parameter. For /dev/sda3 it would call # linux-boot-prober /dev/sda3 See /usr/share/doc/os-prober/README for more information. > It seems not to merge the information with the UUID of the partitions. > I found an other interesting effect, which explains that this bug has > not been found. Now an grub-update produces the correct grub.cfg. > (...) > > What i did in the history: > 1. I unpacked an backup of /dev/sdb1 (Grub partition with Debian > wheezy) to /dev/sda3 > 2. I altered the fstab of the copy and run update-grub (After this i > got this wrong grub.cfg) > 3. I boot from /dev/sda3 and made an system-upgrade from wheezy to > jessie > 4. After the upgrade i run update-grub again from /dev/sdb1 to > actualize the new kernel on /dev/sda3 (Now grub.cfg is correct) > > Is it possible that the (wrong) information is extraced from > initrd.img ? To my knowledge linux-boot-prober does the following: * Mount the given partition read-only to a temporary directory * Read the /etc/fstab of this partition to check if /boot is on a separate partition. If so, it is also mounted. * Read and parse the boot loader configuration from the temporary directory. For grub2 that is boot/grub/grub.cfg. The parameters to the linux kernel (the root=… directive that was wrong in your case) should be directly taken from this file. * Unmount everything again So your report from your message #15 makes sense, if the /boot/grub/grub.cfg file on sda3 (I'm assuming you do not have a separate boot partition) previously contained the "wrong" parameters for the Linux kernel (root=UUID=5c902625-e63e-446f-a5c5-c24a1176dec7 ro single). Regards Lukas -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
