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73416ba
(Get the code!)
Today I helped a users with the exact same problem :
os-prober: debug: running /usr/lib/
os-prober: debug: running /usr/lib/
kernel: [3178302.911951] EXT4-fs (sda1): VFS: Can't find ext4 filesystem
kernel: [3178302.913401] EXT4-fs (sda1): VFS: Can't find ext4 filesystem
kernel: [3178302.915005] EXT4-fs (sda1): VFS: Can't find ext4 filesystem
kernel: [3178302.916449] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sda1
kernel: [3178302.917854] FAT-fs (sda1): bogus number of reserved sectors
kernel: [3178302.917857] FAT-fs (sda1): Can't find a valid FAT filesystem
kernel: [3178302.924998] XFS (sda1): Invalid superblock magic number
kernel: [3178302.927397] FAT-fs (sda1): bogus number of reserved sectors
kernel: [3178302.927399] FAT-fs (sda1): Can't find a valid FAT filesystem
kernel: [3178302.930445] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sda1.
kernel: [3178302.931694] hfsplus: unable to find HFS+ superblock
kernel: [3178302.932769] qnx4: no qnx4 filesystem (no root dir).
kernel: [3178302.933677] ufs: You didn't specify the type of your ufs filesystem
kernel: [3178302.933677]
kernel: [3178302.933677] mount -t ufs -o ufstype=
kernel: [3178302.933677]
kernel: [3178302.933677] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
kernel: [3178302.933997] ufs: ufs_fill_super(): bad magic number
kernel: [3178302.935226] hfs: can't find a HFS filesystem on dev sda1
$ dpkg -l | grep 'os-prober'
ii os-prober 1.70ubuntu3 amd64 utility to detect other OSes on a set of drives
$ . /usr/share/
$ fs_type /dev/sda1
fs_type doesn't return with an error code.
The user installed os-prober (1.70ubuntu3.3) found in xenial-proposed, and problem is now solved :
os-prober: debug: running /usr/lib/
os-prober: debug: running /usr/lib/
- Eric