On 07/11/2011 10:21 PM, Phillip Susi wrote: > Fixing the underlying problem of detecting and ignoring the Win7 system > partition would render the patch moot. If it does really still cover a > use-case to be able to manually specify partitions to ignore, it needs > to be done with UUIDs or something else more stable. Just to tie up that loose end, I had a look at the way update-grub determines the presence of a bootable Win7 partition. Turns out it utilizes the os-prober package, which basically uses a four step process to check for a Win7 system:
1. check for presence of file /bootmgr 2. check for presence of directory /boot/ 3. check for presence of file /boot/bcd 4. grep OS version string from file /boot/bcd If all four steps succeed, the partition is classified as bootable and update-grub writes a boot meny entry. The Win7 system partition on my machine passes all the checks os-prober does, but actually booting from that partition fails with an error message. To solve this, os-prober would have to include some kind of sanity check whether the bootloader configuration on the examined partition is set up correctly and really boots the system. I'm not sure if that is feasible and/or possible at all, and one could also argue that it's up to the user to fix the faulty boot setup on the partition and not blame grub/os-prober for detecting a messed up bootloader. :) Thoughts? BTW, I still think the patch covers a use-case and its functionality could be handy. Thanks, Axel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
