For questions regarding disk storage devices such as hard disk drives, floppy disk drives, and optical disk drives.

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3
votes
1answer
2k views

How do I unmark a “failed” md device?

In an effort to clean up from a software bug in md, I marked half of a RAID (/dev/sda1 and /dev/sdb1 in RAID1) as faulty using: mdadm /dev/md2 --fail /dev/sdb1 mdadm /dev/md2 --remove /dev/sdb1 But ...
3
votes
3answers
582 views

How to extend Ubuntu disk space without using Live CD?

I first installed Windows 7 from factory, then installed Ubuntu. I ran out of space, but there is a lot in Windows partition. So I wanted to allocate some space from the Windows partition to Ubuntu ...
11
votes
13answers
29k views

Disk by UUID not detected (initramfs), boot failure

I am unable to boot my lucid, with the built in boot shell giving out this error: Update 1 This error occured after I updated my 2.6.32-26 version kernel and booted directly in winodows. The ...
1
vote
1answer
97 views

Enable external HD after remote reboot

Ran into this one tonight: Was on my laptop, and ssh'd into my desktop to access files on my desktop's external HD. So far, so good. However, after remotely rebooting the desktop, the external HD ...
17
votes
5answers
34k views

How can I check my RAM and hard drive for errors?

What tools can I use to check that my memory and hard drive are still working correctly?
6
votes
1answer
623 views

Intense hard drive access activity immediately after log in

I upgraded my ubuntu karmic to lucid a few months ago. I don't know when it all started but the thing is that when I log in, I see a very intense disk access activity for a while that prevents any ...
1
vote
2answers
583 views

Nautilus freezes every time I try to delete a file from my mounted disc

My problem is the following: Every time I try to delete a file from my auto-mounted drive Nautilus freezes up. First I get the prompt-screen saying ‘Cannot move file to trash, do you want to delete ...
3
votes
3answers
3k views

USB Drive speed testing app with test options

I know there is a benchmark in the Disk Utility app, but I need something with a few more options. Some of my USB Drives are exhibiting weird results which may be due to testing patterns etc, so some ...
12
votes
7answers
24k views

How can I physically identify a single drive in a RAID array?

I have an external drive bay with 4 eSATA disks in it. My system has a 4-port eSATA card, as well as a pair of internal hardware RAID1 drives. The external drives are in software RAID1 pairs as ...
11
votes
2answers
9k views

how to interpret these errors from syslog

My Ubuntu has been acting weird lately. Yesterday, it wouldn't boot normally, so I had to do a 'recovery mode' boot. It said I had to do an fsck manually, which I did using a live CD. After this, I ...
27
votes
4answers
5k views

Importance of Swap Partition

What is the purpose of a swap partition? How do I know I have just enough swap partition? Not too much/little. My Ubuntu PC is used for typical stuff: Web (email, facebook, etc.) Some movies ...
14
votes
3answers
6k views

Disk Utility: What's the difference between “Unmount” and “Safe Removal”?

System > Administration > Disk Utility What's the difference between "Unmount Volume" and "Safe Removal"? Say you insert a flash drive and open the Disk Utility UI, if you click on "Safe Removal" you ...
2
votes
1answer
1k views

How can I increase my disk space when Ubuntu is installed inside Windows?

I have Ubuntu 10.10 installed inside of Windows using Wubi. I am running out of space on my Ubuntu disk (currently 405.1 MB free). I have a 180 GB hard drive and when I installed Ubuntu I only ...
2
votes
2answers
360 views

Disk is full after runing gparted?

I have around a 150gb hard drive that I had fully allocated to Ubuntu 10.10. I fired up the gparted live cd and reduced it by 47gb for a small ntfs partition for Windows. When it was completed, I ...
4
votes
7answers
1k views

Hard drive overheating badly

My laptop's hard drive heats up quite badly. The regular operating range hovers around 42-44 Centigrade. It gets even worse when the screen is locked with temperatures shooting up to 50C. The casing ...
4
votes
1answer
12k views

Using 'quota' for disk limits

I installed quota using apt-get and followed some of the tutorials online. I ran sudo edquota username which opened nano and gave a chart for me to edit. What does the chart mean when it says soft, ...
21
votes
3answers
25k views

How to set up multiple hard drives as one volume?

I am about to set up box to basically be a file server. I plan on having multiple drives in the box, and would like to set them all up so that they appear to be a single drive. So I could essentially ...
5
votes
1answer
399 views

Is there a way to force a specific file to exist in RAM only?

I like this suggestion of mounting a tmpfs at /var/log in order to reduce disk writes. Is there any way to do something similar for just a single file such as ~/.xsession-errors? My incentive for ...
36
votes
7answers
86k views

How to find out how much disk space is remaining?

What is the command to find out how much disk space is being used/remaining?
2
votes
1answer
1k views

Disk very slow after going from 9.04 to 10.04

My disk is very slow after I installed ubuntu 10.04 over my old 9.04. Doing some tinkering helped a little: sudo hdparm -tT /dev/sda1 /dev/sda1: Timing cached reads: 3668 MB in 2.00 seconds = ...
5
votes
2answers
3k views

Is it possible to extend the disk space available to a wubi install? [duplicate]

I installed ubuntu 10.04 using wubi. I now wish to allocate more disk space to my ubuntu install. Is this possible?
15
votes
6answers
12k views

How to determine where biggest files/directories on my system are stored?

I was wondering how do you know where the largest files in my system are stored. For example--- Disk Space Used: 1GB Java: 500MB Java Percentage: 50% maybe represented in a pie chart. Maybe? I know ...