I still have the same problem. I have grub2 + gpt + bios_grub 1Mb partition and every time when I install/delete a kernel I get:
Jan 12 10:59:08 h8 kernel: [34066.102516] SGI XFS with ACLs, security attributes, realtime, no debug enabled Jan 12 10:59:08 h8 kernel: [34066.115584] JFS: nTxBlock = 8192, nTxLock = 65536 Jan 12 10:59:08 h8 kernel: [34066.145895] ntfs: driver 2.1.32 [Flags: R/O MODULE]. Jan 12 10:59:08 h8 kernel: [34066.180082] QNX4 filesystem 0.2.3 registered. Jan 12 10:59:08 h8 os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda1 Jan 12 10:59:08 h8 kernel: [34066.359360] EXT4-fs (sda1): VFS: Can't find ext4 filesystem Jan 12 10:59:08 h8 kernel: [34066.360493] EXT4-fs (sda1): VFS: Can't find ext4 filesystem Jan 12 10:59:08 h8 kernel: [34066.361601] EXT4-fs (sda1): VFS: Can't find ext4 filesystem Jan 12 10:59:08 h8 kernel: [34066.362843] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sda1 Jan 12 10:59:08 h8 kernel: [34066.363954] FAT-fs (sda1): invalid media value (0x7d) Jan 12 10:59:08 h8 kernel: [34066.363969] FAT-fs (sda1): Can't find a valid FAT filesystem Jan 12 10:59:08 h8 kernel: [34066.368287] XFS (sda1): Invalid superblock magic number Jan 12 10:59:08 h8 kernel: [34066.370213] FAT-fs (sda1): invalid media value (0x7d) Jan 12 10:59:08 h8 kernel: [34066.370228] FAT-fs (sda1): Can't find a valid FAT filesystem Jan 12 10:59:08 h8 kernel: [34066.372862] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sda1. Jan 12 10:59:08 h8 kernel: [34066.379273] hfsplus: unable to find HFS+ superblock Jan 12 10:59:08 h8 kernel: [34066.380230] qnx4: no qnx4 filesystem (no root dir). Jan 12 10:59:08 h8 kernel: [34066.380955] ufs: You didn't specify the type of your ufs filesystem Jan 12 10:59:08 h8 kernel: [34066.380955] Jan 12 10:59:08 h8 kernel: [34066.380955] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ... Jan 12 10:59:08 h8 kernel: [34066.380955] Jan 12 10:59:08 h8 kernel: [34066.380955] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old Jan 12 10:59:08 h8 kernel: [34066.381543] ufs: ufs_fill_super(): bad magic number Jan 12 10:59:08 h8 kernel: [34066.382849] hfs: can't find a HFS filesystem on dev sda1 Jan 12 10:59:08 h8 os-prober: debug: /dev/sda2: part of software raid array Jan 12 10:59:08 h8 os-prober: debug: /dev/sda3: part of software raid array Jan 12 10:59:08 h8 os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sdb1 And so on for all bios_grub partitions sd[a-d]1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1374759 Title: >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1374759/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs