Recently the following boot messages are displayed:
[ 498.278455] EXT4-fs (sdb4): unable to read superblock
[ 498.283656] FAT-fs (sdb4): bogus number of reserved sectors
[ 498.285475] EXT2-fs (sdb4): error: unable to read superblock
[ 498.287354] EXT3-fs (sdb4): error: unable to read superblock
[ 498.292704] FAT-fs (sdb4): bogus number of reserved sectors
[ 498.301129] qnx4: no qnx4 filesystem (no root dir).
[ 498.303008] ufs: You didn't specify the type of your ufs filesystem
[ 498.303008]
[ 498.303008] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
[ 498.303008]
[ 498.303008] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
sdb4: extended partition
Don`t know which package is responsible and where to look for bug reports.
Greetings
Tom
Are you dual/triple booting ?
Have you had BSD, Solaris, QNX RTOS installed at one time ?
fdisk -l
cat /etc/fstab
/sbin/blkid
Show us this!
Sorry for my plain wrong posting title and information :-[
The disturbing messages were not displayed when booting but after launching update-grub and only in runlevel 3.
# LANG=C update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.17-0.towo.3-siduction-amd64
Found initrd image: /boot/initrd.img-3.17-0.towo.3-siduction-amd64
Found iPXE image: /boot/ipxe.lkrn
Found memtest86+ image: /boot/memtest86+.bin
Found memtest86+ multiboot image: /boot/memtest86+_multiboot.bin
[ 250.033826] EXT4-fs (sdb4): unable to read superblock
[ 250.038132] FAT-fs (sdb4): bogus number of reserved sectors
[ 250.039644] EXT2-fs (sdb4): error: unable to read superblock
[ 250.041039] EXT3-fs (sdb4): error: unable to read superblock
[ 250.046051] FAT-fs (sdb4): bogus number of reserved sectors
[ 250.053658] qnx4: no qnx4 filesystem (no root dir).
[ 250.055464] ufs: You didn't specify the type of your ufs filesystem
[ 250.055464]
[ 250.055464] mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...
[ 250.055464]
[ 250.055464] >>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
Found Mac OS X on /dev/sda1
Found Windows 7 (loader) on /dev/sdb1
Found Ubuntu 14.04.1 LTS (14.04) on /dev/sdb7
done
You are right, @piper: Multiboot install with siduction, Lubuntu, OS X Mavericks, Windows 7
Detailed info:
# fdisk -l
Disk /dev/sda: 232,9 GiB, 250058268160 bytes, 488395055 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xa78fbbaf
Device Boot Start End Sectors Size Id Type
/dev/sda1 2 488395054 488395053 232,9G af HFS / HFS+
Disk /dev/sdb: 465,8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x000afbf4
Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 153602047 153600000 73,2G 7 HPFS/NTFS/exFAT
/dev/sdb2 153602048 358402047 204800000 97,7G 83 Linux
/dev/sdb3 358402048 890882047 532480000 253,9G b W95 FAT32
/dev/sdb4 890882048 976773119 85891072 41G 5 Extended
/dev/sdb5 890884096 892932095 2048000 1000M 82 Linux swap / Solaris
/dev/sdb6 892934144 934854655 41920512 20G 83 Linux
/dev/sdb7 934856704 976773119 41916416 20G 83 Linux
# cat /etc/fstab
UUID=052a81e5-b514-38b8-9503-d0bbbf0a0b88 /media/Mavericks hfsplus noauto,users,ro,exec 0 0
UUID=d7b7f68a-0920-4441-88e2-10fae3477fd4 /media/Work ext4 users,rw,exec,relatime 0 0
UUID=EA1E-75DE /media/DATEN vfat users,rw,quiet,umask=000,shortname=lower 0 0
UUID=e2e02f4d-0204-4242-93c5-c13108236ef5 none swap sw 0 0
UUID=e1fc193c-2380-41be-b5b4-63c465622e80 / ext4 defaults,relatime,errors=remount-ro 0 1
UUID=f7c376e1-4dc1-4d7a-89ec-be73d287338f /media/lubuntu ext4 users,rw,exec,relatime 0 0
# /sbin/blkid
/dev/sda1: UUID="052a81e5-b514-38b8-9503-d0bbbf0a0b88" LABEL="Mavericks" TYPE="hfsplus" PARTUUID="a78fbbaf-01"
/dev/sdb1: LABEL="Seven" UUID="8C7E67397E671B6A" TYPE="ntfs" PARTUUID="000afbf4-01"
/dev/sdb2: LABEL="Work" UUID="d7b7f68a-0920-4441-88e2-10fae3477fd4" TYPE="ext4" PARTUUID="000afbf4-02"
/dev/sdb3: LABEL="DATEN" UUID="EA1E-75DE" TYPE="vfat" PARTUUID="000afbf4-03"
/dev/sdb5: UUID="e2e02f4d-0204-4242-93c5-c13108236ef5" TYPE="swap" PARTUUID="000afbf4-05"
/dev/sdb6: LABEL="sid" UUID="e1fc193c-2380-41be-b5b4-63c465622e80" TYPE="ext4" PTTYPE="dos" PARTUUID="000afbf4-06"
/dev/sdb7: LABEL="lubuntu" UUID="f7c376e1-4dc1-4d7a-89ec-be73d287338f" TYPE="ext4" PTTYPE="dos" PARTUUID="000afbf4-07"
Thanks for comments, @piper and @towo.
Greetings
Tom
Comparable message in runlevel 3 here also. Searching for any hints I found samoth's thread, but unfortunately not a solution - at least understandable for me.
[13:21:35] root@thinkpad-s540:/home/jorg# fdisk -l
Disk /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x2c530d06
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 92162047 92160000 44G 83 Linux
/dev/sda2 92162048 184322047 92160000 44G 83 Linux
/dev/sda3 184322048 204802047 20480000 9.8G 82 Linux swap / Solaris
/dev/sda4 204804094 500117503 295313410 140.8G 5 Extended
/dev/sda5 204804096 296964095 92160000 44G 83 Linux
/dev/sda6 296966144 389126143 92160000 44G 83 Linux
/dev/sda7 389128192 500117503 110989312 52.9G 83 Linux
[13:21:45] root@thinkpad-s540:/home/jorg# cat /etc/fstab
# /etc/fstab - static information about filesystems - stab(5)
#
# <filesystem> <mountpoint> <fstype> <mount options> <dump><pass>
#
# dit is disk1part1 = /dev/sda1 (LABEL: siduction)
UUID=a66cf012-95e7-4228-9890-d278786d4559 / ext4 defaults,relatime,errors=remount-ro 0 1
#
# dit is disk1part2 = /dev/sda2 (LABEL: empty)
UUID=832cf9e2-3ec6-4c35-957c-d7469e924132 /media/disk1part2 ext4 auto,users,rw,exec,relatime 0 1
#
# dit is disk1part3 = /dev/sda3
UUID=43deb122-b932-4b0e-aae7-446ef604315e none swap sw 0 0
#
# dit is disk1part5 = /dev/sda5 (LABEL: empty)
UUID=52f94eab-223e-4b5b-ba76-6ad9c76acfeb /media/disk1part5 ext4 auto,users,rw,exec,relatime 0 1
#
# dit is disk1part6 = /dev/sda6 (LABEL: empty)
UUID=3f7eda44-52b0-4c7c-948a-d90b9ea4a835 /media/disk1part6 ext4 auto,users,rw,exec,relatime 0 1
#
# dit is disk1part7 = /dev/sda7 (LABEL: backup)
UUID=b8acf18a-1a19-4910-bdc8-383bc1572cfc /media/disk1part7 ext4 auto,users,rw,exec,relatime 0 1
#
[13:22:55] root@thinkpad-s540:/home/jorg# /sbin/blkid
/dev/sda1: LABEL="siduction" UUID="a66cf012-95e7-4228-9890-d278786d4559" TYPE="ext4" PARTUUID="2c530d06-01"
/dev/sda2: LABEL="empty" UUID="832cf9e2-3ec6-4c35-957c-d7469e924132" TYPE="ext4" PARTUUID="2c530d06-02"
/dev/sda3: UUID="43deb122-b932-4b0e-aae7-446ef604315e" TYPE="swap" PARTUUID="2c530d06-03"
/dev/sda5: LABEL="empty" UUID="52f94eab-223e-4b5b-ba76-6ad9c76acfeb" TYPE="ext4" PARTUUID="2c530d06-05"
/dev/sda6: LABEL="empty" UUID="3f7eda44-52b0-4c7c-948a-d90b9ea4a835" TYPE="ext4" PARTUUID="2c530d06-06"
/dev/sda7: LABEL="backup" UUID="b8acf18a-1a19-4910-bdc8-383bc1572cfc" TYPE="ext4" PARTUUID="2c530d06-07"
[13:23:37] root@thinkpad-s540:/home/jorg#
Greetings,
Jörg
I also get these messages. As it is always concerning the extended partition container on the two harddisks and no special partition in it I have chosen to ignore it. The container itself doesn't have any filesystem AFAIK and therefore the messages are correct, only disturbing. BTW: Multiboot wiht several linux distributions here too in case that matters.