Urza9814 Posted May 22, 2009 Report Share Posted May 22, 2009 Ok, so at some point last night my system crashed. I'm not sure what exactly happened, but it does that every once in a while, and I haven't yet had time to figure it out (kinda hard to when it only happens once a week or so...). Anyway, I reboot this morning and while running the disk scans it throws the bad superblock error: The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device> Now, it's throwing the error when I try to fsck /dev/sda5, which is an ext3 filesystem mounted as /home. Now, if I try 'mount /dev/sda5' it says that it can't find /dev/sda5 in fstab. But if I do 'mount /home' it works fine. And then I can su to my user and run startx, and at first everything appears fine...but some apps start _really_ slow and appear to freeze - Pidgin, Konqueror, VLC, Kaffeine, and MCC run fine, yet Firefox, Epiphany, World of Warcraft (through Cedega), and Diskdrake won't run. Anyone got any ideas I can try? It has the feeling of hardware failure to me, but it seems strange that only that partition would fail. My root partition is on the same drive and I have no problems at all with that. Quote Link to comment Share on other sites More sharing options...
scarecrow Posted May 22, 2009 Report Share Posted May 22, 2009 Reboot in init 1 (when grub menu appears, press e and add "1" without the quotes at the end of the commandline), and then from there (as root) run the above comand: e2fsck -b 8193 /dev/sda5 It must NOT be mounted when performing the above filesystem check. Quote Link to comment Share on other sites More sharing options...
Urza9814 Posted May 22, 2009 Author Report Share Posted May 22, 2009 Ah, sorry, I have in fact tried that as well, and it throws the same exact error message. Quote Link to comment Share on other sites More sharing options...
scarecrow Posted May 22, 2009 Report Share Posted May 22, 2009 Can you please post your fstab? ( cat /etc/fstab ). Is it built using device nodes, or UUID's? Quote Link to comment Share on other sites More sharing options...
Urza9814 Posted May 23, 2009 Author Report Share Posted May 23, 2009 yea, It's using UUIDs. # Entry for /dev/sda2 : UUID=61bd293e-345c-11dd-ad0b-259b88ddc9d9 / ext3 relatime 1 1 # Entry for /dev/sdc1 : UUID=d4c29825-18cd-428d-a49e-06a449a83883 /Backups ext3 relatime 1 2 # Entry for /dev/sda5 : UUID=35bc3130-345d-11dd-adee-0bdd13b90602 /home ext3 relatime 1 2 /dev/cdrom /media/cdrom auto umask=0,users,iocharset=utf8,noauto,ro,exec 0 0 /dev/sda1 /mnt/fnet jfs relatime 1 2 # Entry for /dev/sda1 : UUID=FAA03F4AA03F0D1F /mnt/windows ntfs-3g defaults 0 0 none /proc proc defaults 0 0 # Entry for /dev/sdc5 : UUID=b714fe21-744b-48f5-8380-c1a5a45e5538 swap swap defaults 0 0 Quote Link to comment Share on other sites More sharing options...
scarecrow Posted May 23, 2009 Report Share Posted May 23, 2009 (edited) Hmmm... I suspect something changed slightly the harddisk partition table (maybe the windows you're dualbooting? dunno really...) , and now the UUiD's do not match the actual partitions. Please change it accordingly: # Entry for /dev/sda2 : /dev/sda2 / ext3 relatime 1 1 # Entry for /dev/sdc1 : /dev/sdc1 /Backups ext3 relatime 1 2 # Entry for /dev/sda5 : /dev/sda5 /home ext3 relatime 1 2 /dev/cdrom /media/cdrom auto umask=0,users,iocharset=utf8,noauto,ro,exec 0 0 /dev/sda1 /mnt/fnet jfs relatime 1 2 # Entry for /dev/sda1 : /dev/sda1 /mnt/windows ntfs-3g defaults 0 0 none /proc proc defaults 0 0 # Entry for /dev/sdc5 : /dev/sdc5 swap swap defaults 0 0 If you still have problems, you could try again removing the "relatime" optimization switches ( just replace "relatime" with "defaults" ) If you want to keep the UUID entries, run the utility "blkid" and see if the UUID values it returns match the ones in your fstab. Edited May 23, 2009 by scarecrow Quote Link to comment Share on other sites More sharing options...
Urza9814 Posted May 25, 2009 Author Report Share Posted May 25, 2009 (edited) Huh. Well, I left on friday morning to attend my brother's graduation, so sorry for the late reply, but...: I left my computer running when I left, just on the command-line, which I probably shouldn't have done, but it worked out. When I got home it was locked up again, so I did a hard reset...and it booted up and is working perfectly. Very strange. Now I need to get the new 2009 Spring installed and see if that does anything for the locking up. If not I think it's my RAM. Oh, and the problem couldn't be my Windows partition - I haven't booted that thing in _months_. Actually I'm pretty sure it's been more than a year now. :) Edited May 25, 2009 by Urza9814 Quote Link to comment Share on other sites More sharing options...
ianw1974 Posted May 26, 2009 Report Share Posted May 26, 2009 You can install and run memtest to check if your ram is bad. Quote Link to comment Share on other sites More sharing options...
Urza9814 Posted May 26, 2009 Author Report Share Posted May 26, 2009 Yea, I have memtest...and about every third or fourth time I run it it finds an error, so I'm not sure what that means. lol Quote Link to comment Share on other sites More sharing options...
ianw1974 Posted May 26, 2009 Report Share Posted May 26, 2009 Could be that you need to pull out the memory, give the contacts a clean and put it back in again - retest and see if you get errors. If you do, and you have one than more memory module installed, you'll have to test them individually and then find out which one is the problem and replace the faulty one accordingly. Or, if both, replace both. Quote Link to comment Share on other sites More sharing options...
Urza9814 Posted May 27, 2009 Author Report Share Posted May 27, 2009 Ok, I ran 40 passes (left it running all day and all night) and got no errors - though I do have it running underclocked, as this was suggested to try to fix any problems I was having. So now I'm running off the 2009 Spring One Live CD, and I'm gonna put it through some stress (Freenet - pretty much crashes it without fail by the end of the night) to hopefully determine if it's hardware or software. Quote Link to comment Share on other sites More sharing options...
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