Thanks Otavio. Unfortunately, your patch does not solve the bug. Please see below the os-prober output I get in 3 configurations:
1) Normal output (no /boot folder in the Windows partition) : /dev/sda1:Windows Vista (loader):Windows:chain /dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux 2) Output when there is a /boot folder in the Windows partition (without patch): ls: cannot access /media/Vista/Boot boot: No such file or directory /dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux 3) Output when there is a /boot folder in the Windows partition (with your patch): /dev/sda5:Ubuntu 10.10 (10.10):Ubuntu:linux Remark : indeed even an empty /boot folder is enough to disturb os-prober. What this /boot folder contains does not change the result. I think the bug comes from the fact that os-prober looks inside the /boot folder but not inside the /Boot (or /BOOT) folder. Regards
