Did you know LQ has a Linux Hardware Compatibility List?
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 07-03-2009, 06:45 AM   #1
Registered: Jul 2009
Posts: 50

Rep: Reputation: 8
Question External USB Hard-drive sometimes doesn't mount

Hi, I have been using Ubuntu for about a week now and I'm very impressed with it - seems much more stable and faster than Windoze V*sta.
I have an Iomega 250GB USB drive formatted in NTFS which I regularly use on my XP box at work and my Ubuntu Jackalope laptop at home. But sometimes it fails to start on Ubuntu - I plug it in and nothing happens. Sometimes it mounts just fine.

I always make sure to dismount properly before unplugging (although sometimes XP is very reluctant to let it go, occasionally forcing me to shut right down so I can unplug it - very annoying)

any ideas?
Old 07-03-2009, 09:38 AM   #2
Registered: Oct 2003
Location: Zürich
Distribution: Debian
Posts: 537

Rep: Reputation: 39
Some laptops don't have quite enough juice to power external USB mass storage drives over the USB connection. This might or might not explain consistencies. If your drive uses external power from an adapter, this won't be an issue.

You should also make sure you're not plugging on a USB hub.

Next time you plug it in and nothing happens, run the dmesg command, or use "dmesg | tail" (to see the end of the dmesg output), to see what the system reports. *Something* is happening, just not what you expect.
Old 07-03-2009, 11:45 AM   #3
LQ 5k Club
Registered: May 2003
Location: London, UK
Distribution: Debian "Jessie"
Posts: 6,057

Rep: Reputation: 377Reputation: 377Reputation: 377Reputation: 377
And check your USB cable (by trying another one).
If the drive doesn't spin up when you plug it in it's either power (michapma) or a bad cable.
Linux will not see it until it has spun up.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Unable to mount USB external hard drive Irene Chan Linux - Newbie 11 03-13-2010 01:02 PM
Mount external usb hard drive rust8y Solaris / OpenSolaris 1 01-21-2009 03:39 PM
how do I mount an external USB hard drive hykhoshn Linux - Hardware 1 06-01-2006 10:14 AM
New to RH9 please help me to mount? a external usb hard drive ginda Linux - Newbie 7 05-29-2006 07:11 PM
How to mount external USB hard drive? zyzyis Linux - Newbie 6 02-01-2006 09:37 PM

All times are GMT -5. The time now is 12:32 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration