Unable to access new partition

**Bucic** · February 15th, 2011

I've created few new ext4 partitions and weird things started to happen.

First I couldn't open neither the new partitions nor my USB pen drive even though they were listed under "Places". Nautilus simply wouldn't open. After some time it resolved itself and I could open all of them.

But then I couldn't create a new folder nor copy any files to that partitions (error: permission denied).

/etc/fstab contents:

Code:

proc            /proc           proc    nodev,noexec,nosuid 0       0
/dev/sda1       /               ext4    errors=remount-ro 0       1
/dev/sda5       none            swap    sw              0       0

Code:

:~$ sudo fdisk -l
[sudo] password for hg1: 

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00092ecc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *         262        2410    17257472   83  Linux
/dev/sda2            2410        9730    58795008    5  Extended
/dev/sda3               1         262     2097152   82  Linux swap / Solaris
Partition 3 does not end on cylinder boundary.
/dev/sda5            9208        9730     4194304   83  Linux
/dev/sda6            2410        2802     3145728   83  Linux
/dev/sda7            2802        9208    51452928   83  Linux

Partition table entries are not in disk order

Disk /dev/sdb: 4026 MB, 4026531840 bytes
255 heads, 63 sectors/track, 489 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf027b97a

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1         488     3919828+   6  FAT16

Code:

:~$ sudo blkid
[sudo] password for hg1: 
/dev/sda1: UUID="234f851a-ddd6-4e56-8adb-05fe335fdc1d" TYPE="ext4" 
/dev/sda3: UUID="188b85cc-7989-4386-a7e6-32c5f5c02cbb" TYPE="swap" 
/dev/sda5: UUID="ed0e75fa-3ebe-4597-98a8-1209c2cb7593" TYPE="ext4" 
/dev/sda6: UUID="5b9cb703-2b3a-4287-b789-9f90964b031f" TYPE="ext4" 
/dev/sda7: UUID="b215351b-0a65-45bf-99a3-d9cfd32b09eb" TYPE="ext4" 
/dev/sdb1: SEC_TYPE="msdos" LABEL="MULTIBOOT" UUID="8CD4-97F3" TYPE="vfat"

**sikander3786** · February 15th, 2011

There seem to be a problem with sda1 and sda3. But, please post the output of this command first.

Code:

sudo fdisk -lu

**Bucic** · February 15th, 2011

Thanks for such a fast response!

Code:

:~$ sudo fdisk -lu
[sudo] password for hg1: 

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 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
Disk identifier: 0x00092ecc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *     4196352    38711295    17257472   83  Linux
/dev/sda2        38711296   156301311    58795008    5  Extended
/dev/sda3            2048     4196351     2097152   82  Linux swap / Solaris
Partition 3 does not end on cylinder boundary.
/dev/sda5       147912704   156301311     4194304   83  Linux
/dev/sda6        38713344    45004799     3145728   83  Linux
/dev/sda7        45006848   147912703    51452928   83  Linux

Partition table entries are not in disk order

Disk /dev/sdb: 4026 MB, 4026531840 bytes
255 heads, 63 sectors/track, 489 cylinders, total 7864320 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
Disk identifier: 0xf027b97a

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          63     7839719     3919828+   6  FAT16

**oldfred** · February 15th, 2011

How are you mounting them. You need to be the owner & have permissions. Best to permanently mount with fstab.

Understanding fstab
http://ubuntuforums.org/showthread.php?t=283131
https://help.ubuntu.com/community/Mount/
https://help.ubuntu.com/community/FilePermissions

$ sudo mkdir /Data
$ sudo mount /dev/sda5 /Data
where sda5 needs to be your drive, partition
if not known to list partitions
sudo fdisk -l

If you cannot read and write then change the permissions. Not for NTFS

$ sudo chmod -R 777 /Data
sudo chown -R fred:fred /Data
where fred should be your login name

I prefer to manually edit as I have sometimes had issues with this:
But it is a lot easier to use a graphical front end that both creates the mount point and edits fstab.
Try installing pysdm from the repos.
PySDM is a PyGTK Storage Device Manager
GUI Fstab Editing with PySDM
http://ubuntuforums.org/showthread.p...ighlight=pysdm
Storage Device Manager - Worry-Free Fstab Configuration
http://ubuntuforums.org/showthread.php?t=872197

**sikander3786** · February 15th, 2011

sda3 doesn't end on cylinder boundary but that is not a serious issue.

In addition to oldfred's suggestion above, here is an even simpler one.

http://ubuntu4beginners.blogspot.com...ives-with.html

**Bucic** · February 15th, 2011

I can't find that bloody PySDM. It's listed as installed in the software center.

Isn't Ubuntu supposed to auto mount new partitions anyway?

**Bucic** · February 15th, 2011

I've added a line on the end of my fstab and currently it looks like this

Code:

/dev/sda1 / ext4 defaults 0 1
/dev/sda3 swap swap sw 0 0
/dev/sda7 /media/data ext4 defaults 0 2

I still can't access that sda7 partition.

I did only that (one line added). Nothing else. I used the sudo gedit /etc/fstab command. Rebooting doesn't help either.

**oldfred** · February 15th, 2011

And did you chown & chmod it?

if you look at the /media/data partition.

Mine are all folders:

Code:

fred@fred-LT-A105:/mnt/data$ ls -l
total 84
drwxrw-rw- 10 fred fred  4096 2011-02-07 17:40 Documents
drwxrw-rw-  2 fred fred  4096 2011-02-13 13:19 Downloads

**Bucic** · February 16th, 2011

As I said I've only added the line in fstab.

I did chown as per the guide at blogspot linked above. One command.

It works now, however I would be grateful for additional info:
- isn't ubuntu supposed to automount partitions created post system installation?
- I recall I mounted more than one linux partition in the past and I have never even heard of chown and chmod. How is that possible? EDIT: Even this guide doesn't mention chmod/chown http://landofthefreeish.com/linux/ho...linux-install/