Ubuntu
util-linux package

mount and unmount problems

Asked by Mahesh Vijayan

I have two HDDs one 250GB and another 500GB. The first partitioned in to three, and the other into four. In the 1st partition of the first drive I installed Windows XP. Then I got a cd of Ubuntu 10.4LTS, I installed into the 3rd partition of the 1st drive.

My problem is when I choose any partition other than this ubuntu, it will appear on the desktop as an icon. I searched in launchpad to unmount the drives there was a answer like to use the command " sudo umount/media/sda1", when gave the command there were no action but it worked when i made a little bit correction "sudo umount /dev/sba1" (sba1,sba2...sba4). All gone from my desktop.

But now I face another problem, after that command I could able to any those drives there appears a message like this "Error mounting: mount exited with exit code 1: helper failed with:
mount: only root can mount /dev/sdb1 on /media/New_Volume"

what exactly I have to do to correct both problems. I think the the drives have to mounted in 'media', isn't it? but they are mount on the 'dev'. how can I correct this?

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delance (olivier-delance) said : 		#1

Check in System->Administration->Users&Groups if your are authorized to mount external media.
And also, please, provide partition table
--
Please provide partition table.
If you can't boot from hard drive, boot en Ubuntu CD/USB stik and then choose "Try without install".
Open a terminal: you can either press Ctrl+Alt+T or Applications->Accessories->Terminal.
To copy/paste in a terminal, replace Ctrl+C by Ctrl+Maj+C and Ctrl+V by Ctrl+Maj+V (for historical reason, Ctrl+C is assigned another function).
Paste to terminal the following commands:
    sudo fdisk -l
where "-l" is lower case "L".
Copy/paste result into a new thread post.

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rahulchoure4541 (rahulchoure4541) said : 		#2

i also have this problem. i have this problem when i mount or unmount, before this i installed xfce desktop environment and did something for auto mounting in that, pls help me.

Error unmounting: umount exited with exit code 1: helper failed with:
umount: only root can unmount /dev/sda2 from /media/RAHUL

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 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: 0x21d421d3

   Device Boot Start End Blocks Id System
/dev/sda1 * 1 6373 51191091 7 HPFS/NTFS
/dev/sda2 6374 11473 40965750 7 HPFS/NTFS
/dev/sda3 11474 16573 40962622+ 83 Linux
/dev/sda4 16574 38913 179446050 7 HPFS/NTFS

pls help....

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