Thread: unknown file system type '1'

i'm running ubuntu 11.10 , when reboot receive following error:

mount: unknown filesystem type '1'
mountall: mount 0 [304]terminated status 32
mountall: filesystem not mounted: 0
fsck util-linux 2.19.1
/dev/mapper/mail1-root: clean,75841/4194304 files, 662535/16773120 blocks
/dev/sda1: clean, 229/124496 files, 39604/248832 blocks
error occurred while mounting 0.
press s skip mounting or m manual recovery

if press s skip, system seems continue , can log in. if reboot, receive above message. i've included fstab , blkid info below.

appreciated.

fstab info.

# /etc/fstab: static file system information.
#
# use 'blkid' print universally unique identifier a
# device; may used uuid= more robust way name devices
# works if disks added , removed. see fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
/dev/mapper/mail1-root / ext4 errors=remount-ro 0 1
ro,usrjquota=quota.user,grpjquota=quota.group,jqfm t=vfsv0 0 1
# /boot on /dev/sda1 during installation
uuid=84d396ab-cbb0-4a9f-9021-433931e054fe /boot ext2 defaults
0 2
/dev/mapper/mail1-swap_1 none swap sw 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0




blkid info.

/dev/sda1: uuid="84d396ab-cbb0-4a9f-9021-433931e054fe" type="ext2"
/dev/sda5: uuid="wxxxvd-pcyd-btmi-dtm6-bamn-pzxt-5gwe2v" type="lvm2_member"
/dev/mapper/mail1-root: uuid="4c879997-b9f3-4b36-8d1c-be7f7ebe038e" type="ext4"
/dev/mapper/mail1-swap_1: uuid="c545b795-1024-4bea-9119-5ce9d6d149bf" type="swap"


thank in advance.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support New to Ubuntu [ubuntu] unknown file system type '1'

Ubuntu