[SOLVED] edited fstab partially works

[lisa374]

After editing fstab I've come to a point where the last incarnation, adding the 6th new partition, doesn't mount the 6th partition. The previous 5 versions of fstab worked well.
When I added /dev/sda10 ... to the fstab, rebooted, I found that .../sda10 was NOT mounted.
Where should I look, any .log files, in order to discover the error?
Below is a copy of my latest fstab:
/dev/disk/by-id/ata-Hitachi_HDT721010SLA360_STF604MR275MWP-part2 swap swap defaults 0 0
/dev/disk/by-id/ata-Hitachi_HDT721010SLA360_STF604MR275MWP-part1 / ext3 defaults 1 1
proc /proc proc defaults 0 0
sysfs /sys sysfs noauto 0 0
debugfs /sys/kernel/debug debugfs noauto 0 0
usbfs /proc/bus/usb usbfs noauto 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
/dev/sda5 /mnt/lfs ext3 defaults 1 1
/dev/sda6 /mnt/lfs/home ext3 defaults 1 1
/dev/sda7 /mnt/lfs/usr ext3 defaults 1 1
/dev/sda8 /mnt/lfs/tmp ext3 defaults 1 1
/dev/sda9 /mnt/lfs/opt ext3 defaults 1 1
/dev/sda10 /mnt/lfs/source ext3 defaults 1 1

[hans51]

look at
dmesg
and monitor logs:
tail -f /var/log/warn
tail -f /var/log/messages

make sure your fstab contains no wrong characters or wrong lifefeeds when preparing your lines offline or with other editors rather than system tools or vi (editor)

[atreyu]

i would start by just trying to mount it by hand, e.g. (as root or sudo, etc.):

mount -v -t ext3 /dev/sda10 /mnt/lfs/source

does that even work?

[lisa374]

Thanks atreyu.
Yes, manual mounting works.

[lisa374]

Thanks hans51.
You answered my question just as if you had read it.
So many people try to help without really reading the question.
You really helped my learning.

[lisa374]

Thanks to all who answered.
Problem solved.