Based on a very quick code scan, I believe that this is an old bug never discovered rather than a recent regression (now that I think of it, I did see other people in the past unable to mount from vfat after kernel upgrade).
The initrd in the live cd explicitly adds vfat via casper hooks: ./hooks/casper:manual_add_modules vfat but the same does not hold for regular initramfs-tools. In particular, there is no vfat reference in initramfs-tools/hook- functions auto_add_modules>base and dep_add_modules. So when a new initramfs is generated there is no vfat. ** Changed in: initramfs-tools (Ubuntu) Status: New => Confirmed -- There is no vfat module in the 2.6.24-17 initrd https://bugs.launchpad.net/bugs/236021 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs