My parted output for this partition is: Number Start End Size File system Name Flags 1 1049kB 8389kB 7340kB bios_grub bios_grub
Ideally, the bios_grub flag could be used to tell relevant code (os- prober, apparently) to ignore this partition. That would eliminate 96 scary messages from my boot log. There are two disks on my system (for failover purposes), each with a bios_grub flag. Each one gets 48 of these useless messages. For some reason, os-prober is probing each disk multiple times. Since I monitor my logs closely, I'd love to have these go away. Log messages for one of the two disks appears below, just in case there's some new information in them. --- > Dec 21 05:26:46 samantha kernel: [1024918.757361] EXT4-fs (sda1): VFS: Can't > find ext4 filesystem -> Dec 21 05:26:46 samantha kernel: [1024918.762203] EXT4-fs (sda1): VFS: Can't find ext4 filesystem -> Dec 21 05:26:46 samantha kernel: [1024918.767102] EXT4-fs (sda1): VFS: Can't find ext4 filesystem -> Dec 21 05:26:46 samantha kernel: [1024918.771882] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sda1 -> Dec 21 05:26:46 samantha kernel: [1024918.776705] FAT-fs (sda1): invalid media value (0x7d) -> Dec 21 05:26:46 samantha kernel: [1024918.776803] FAT-fs (sda1): Can't find a valid FAT filesystem -> Dec 21 05:26:46 samantha kernel: [1024918.791838] XFS (sda1): Invalid superblock magic number -> Dec 21 05:26:46 samantha kernel: [1024918.801632] FAT-fs (sda1): invalid media value (0x7d) -> Dec 21 05:26:46 samantha kernel: [1024918.801730] FAT-fs (sda1): Can't find a valid FAT filesystem -> Dec 21 05:26:46 samantha kernel: [1024918.815672] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sda1. -> Dec 21 05:26:47 samantha kernel: [1024918.843397] hfsplus: unable to find HFS+ superblock -> Dec 21 05:26:47 samantha kernel: [1024918.848163] qnx4: no qnx4 filesystem (no root dir). -> Dec 21 05:26:47 samantha kernel: [1024918.852787] ufs: You didn't specify the type of your ufs filesystem -> Dec 21 05:26:47 samantha kernel: [1024918.852787] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ... -> Dec 21 05:26:47 samantha kernel: [1024918.852787] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old -> Dec 21 05:26:47 samantha kernel: [1024918.853511] ufs: ufs_fill_super(): bad magic number -> Dec 21 05:26:47 samantha kernel: [1024918.863201] hfs: can't find a HFS filesystem on dev sda1 -> Dec 21 05:26:47 samantha kernel: [1024919.062796] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.067520] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.072411] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.077055] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sdb1 -> Dec 21 05:26:47 samantha kernel: [1024919.081806] FAT-fs (sdb1): invalid media value (0x7d) -> Dec 21 05:26:47 samantha kernel: [1024919.081904] FAT-fs (sdb1): Can't find a valid FAT filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.097725] XFS (sdb1): Invalid superblock magic number -> Dec 21 05:26:47 samantha kernel: [1024919.107655] FAT-fs (sdb1): invalid media value (0x7d) -> Dec 21 05:26:47 samantha kernel: [1024919.107754] FAT-fs (sdb1): Can't find a valid FAT filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.121471] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sdb1. -> Dec 21 05:26:47 samantha kernel: [1024919.126085] hfsplus: unable to find HFS+ superblock -> Dec 21 05:26:47 samantha kernel: [1024919.130815] qnx4: no qnx4 filesystem (no root dir). -> Dec 21 05:26:47 samantha kernel: [1024919.135241] ufs: You didn't specify the type of your ufs filesystem -> Dec 21 05:26:47 samantha kernel: [1024919.135241] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ... -> Dec 21 05:26:47 samantha kernel: [1024919.135241] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old -> Dec 21 05:26:47 samantha kernel: [1024919.135996] ufs: ufs_fill_super(): bad magic number -> Dec 21 05:26:47 samantha kernel: [1024919.145351] hfs: can't find a HFS filesystem on dev sdb1 -> Dec 21 05:27:41 samantha kernel: [1024973.119969] EXT4-fs (sda1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.124592] EXT4-fs (sda1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.129261] EXT4-fs (sda1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.133842] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sda1 -> Dec 21 05:27:41 samantha kernel: [1024973.138461] FAT-fs (sda1): invalid media value (0x7d) -> Dec 21 05:27:41 samantha kernel: [1024973.138559] FAT-fs (sda1): Can't find a valid FAT filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.165578] XFS (sda1): Invalid superblock magic number -> Dec 21 05:27:41 samantha kernel: [1024973.175276] FAT-fs (sda1): invalid media value (0x7d) -> Dec 21 05:27:41 samantha kernel: [1024973.175374] FAT-fs (sda1): Can't find a valid FAT filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.189100] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sda1. -> Dec 21 05:27:41 samantha kernel: [1024973.193887] hfsplus: unable to find HFS+ superblock -> Dec 21 05:27:41 samantha kernel: [1024973.198351] qnx4: no qnx4 filesystem (no root dir). -> Dec 21 05:27:41 samantha kernel: [1024973.202846] ufs: You didn't specify the type of your ufs filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.202846] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ... -> Dec 21 05:27:41 samantha kernel: [1024973.202846] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old -> Dec 21 05:27:41 samantha kernel: [1024973.203554] ufs: ufs_fill_super(): bad magic number -> Dec 21 05:27:41 samantha kernel: [1024973.212929] hfs: can't find a HFS filesystem on dev sda1 -> Dec 21 05:27:41 samantha kernel: [1024973.412851] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.417484] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.422210] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.426848] squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on sdb1 -> Dec 21 05:27:41 samantha kernel: [1024973.434952] FAT-fs (sdb1): invalid media value (0x7d) -> Dec 21 05:27:41 samantha kernel: [1024973.438393] FAT-fs (sdb1): Can't find a valid FAT filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.454082] XFS (sdb1): Invalid superblock magic number -> Dec 21 05:27:41 samantha kernel: [1024973.463565] FAT-fs (sdb1): invalid media value (0x7d) -> Dec 21 05:27:41 samantha kernel: [1024973.466975] FAT-fs (sdb1): Can't find a valid FAT filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.480804] VFS: Can't find a Minix filesystem V1 | V2 | V3 on device sdb1. -> Dec 21 05:27:41 samantha kernel: [1024973.485419] hfsplus: unable to find HFS+ superblock -> Dec 21 05:27:41 samantha kernel: [1024973.489912] qnx4: no qnx4 filesystem (no root dir). -> Dec 21 05:27:41 samantha kernel: [1024973.497625] ufs: You didn't specify the type of your ufs filesystem -> Dec 21 05:27:41 samantha kernel: [1024973.497625] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ... -> Dec 21 05:27:41 samantha kernel: [1024973.497625] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old -> Dec 21 05:27:41 samantha kernel: [1024973.515267] ufs: ufs_fill_super(): bad magic number -> Dec 21 05:27:41 samantha kernel: [1024973.528084] hfs: can't find a HFS filesystem on dev sdb1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1625358 Title: os-prober tries to mount bios_grub (BIOS boot) partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1625358/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
