Re: problem with chmod

On Sat, 4 Apr 2009, Thorny wrote:


[...]

I don't know whether blkid has to be run as a superuser, but, when I ran
the command, I got no response.


As has already been mentioned by NoOp, blkid is installed by default and
should have given you output. It may become important to find out why
blkid doesn't work on your system. You also could have browsed to the
/etc/blkid.tab and looked at them in there.


As it happens, it does work on the system.

As stated in another response to my messages, the command does require
to be done with sudo. I tried that, and that works.


The previously mentioned (in the thread) command ls -l /dev/disk/by-uuid
worked; it listed uuid's for each partitition.


Of course it did, the command that would have not given you UUIDs was
fdisk -l, alternately, you could have just browsed to the location in the
/dev folder and seen them there.


I entered the uuid's appropriately (I think) in the fstab file, and
tried two different positionings, but the amending of the fstab file,
did not result in the partitions being mounted.

To ensure no typographical errors in the UUID entris in the fstab file,
I copied and pasted the respective UUID's from the response to the ls
comand cited above.

I used the format
# <device>
<UUID> ext3 <mountpoint> defaults 0 0


This looks like you followed an appropriate method however it's general
and we probably need to check specifics at this point.

Post your real fstab (filesystem table), and also the two partitions, as
below.



:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda8
UUID=3bb93d1c-1875-4036-90c7-846e954ceb45 /data ext3 defaults 0 0
# /dev/sda5
UUID=cb771616-3630-4139-9b1d-c3fb499d9949 /debian_home ext3 defaults 0 0
# /dev/sda7
UUID=1b72f837-17e1-4af9-9f22-31dc9a191657 / ext3 relatime,errors=remount-ro 0 1
# /dev/sda6
UUID=b421ce00-c5cc-4df1-9102-65b0b256376d none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
/dev/scd1 /media/cdrom1 udf,iso9660 user,noauto,exec,utf8 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0




for each of the two partitions that I wanted to be mounted.

both of the partitions are ext3 partitions.


This topic started out talking about a 33G partition on which you
installed Ubuntu, then you tried to carve that into two partitions.

What are those two partitions, is one the hdc8 that you mention in this
quote? "I have now managed to get the particular (hdc8) partition mounted,
and writable, and written to, in Debian, but I now do not know how to get
the file mounted in Ubuntu" It's not clear to me what "file" you are
referring to in that comment.

So, list the two partitions you want to mount at boot so we can compare
them to your fstab.


The two partitions that I want to be able to mount at system bootup in
the Ubuntu system, are sda8 and sda5, as shown in the fstab file above.
sda5 is the /home partition of my Debian system.


I figured that the use of defaults would be okay, as it is used in the
first data line of the file; the proc line.

Then, I rebooted, after each positioning.


No need to reboot, after saving your changes to fstab, issue the command,
as root(sudo), mount -a. That will mount all the filesystems marked auto
in the fstab.

[...]
After each attempt, I ran df -h, to find whether the two partitions were
listed, and, they weren't included in the listing, so I tried looking
using the Ubuntu equivalent of the File Browser, and I did not find the
partions, so I assume that they did not get mounted, in each of the two
attempts.

So, I still cannot get the two partitions to get mounted, via the fstab
file, in Ubuntu.


Can you mount both of them manually? What command do you use for mounting
and, after you've mounted them, does the output of the mount command with
no options show them as mounted? Does fdisk -l show them?


I have not mounted HDD partitions manually. I have only ever mounted
removable media, like FDD's, manually (and that was a couple of years
ago, now, I think)

I assume that the command that should be used for mounting the
partitions manually, is mount.

--
Bret Busby
Armadale
West Australia
..............

"So once you do know what the question actually is,
you'll know what the answer means."
- Deep Thought,
Chapter 28 of Book 1 of
"The Hitchhiker's Guide to the Galaxy:
A Trilogy In Four Parts",
written by Douglas Adams,
published by Pan Books, 1992

....................................................

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