LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices

Reply
 
Search this Thread
Old 07-27-2008, 11:57 AM   #1
jonsson
LQ Newbie
 
Registered: Sep 2004
Location: Sweden
Distribution: Kubuntu Feisty, Fedora Core 3
Posts: 22

Rep: Reputation: 15
Question USB disk, Linux only sees 32 of 80 GB?


I have just emptied an old 80 GB hard disk (full story in this thread, there used to be a disk manager program on it). It is now in an external USB case. However when I plug it in, Linux thinks it's only 32 GB or so? (This is in a modern computer that has no problems with large disks). I even tried plugging it into a windows machine but Windows didn't even find it (I'm no good at Windows but shouldn't it show up under "My Computer"? It did notice that new hardware was connected.)

Any ideas about how to be able to use the whole disk again? There's no old data to rescue, I just want to be able to use it for new data.

Output of dmesg after connecting the disk:
Code:
[ 6467.364000] usb-storage: device found at 8
[ 6467.364000] usb-storage: waiting for device to settle before scanning
[ 6472.364000] usb-storage: device scan complete
[ 6472.364000] scsi 3:0:0:0: Direct-Access     IC35L080 AVVA07-0         0000 PQ: 0 ANSI: 0
[ 6472.364000] SCSI device sdb: 66055244 512-byte hdwr sectors (33820 MB)
[ 6472.368000] sdb: Write Protect is off
[ 6472.368000] sdb: Mode Sense: 27 00 00 00
[ 6472.368000] sdb: assuming drive cache: write through
[ 6472.368000] SCSI device sdb: 66055244 512-byte hdwr sectors (33820 MB)
[ 6472.368000] sdb: Write Protect is off
[ 6472.368000] sdb: Mode Sense: 27 00 00 00
[ 6472.368000] sdb: assuming drive cache: write through
[ 6472.368000]  sdb:
[ 6472.380000] sd 3:0:0:0: Attached scsi disk sdb
[ 6472.380000] sd 3:0:0:0: Attached scsi generic sg1 type 0
blöa
 
Old 07-27-2008, 12:08 PM   #2
michaelk
Moderator
 
Registered: Aug 2002
Posts: 11,891

Rep: Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743
I suspect the <32GB jumper is installed.
 
Old 07-28-2008, 09:19 AM   #3
jonsson
LQ Newbie
 
Registered: Sep 2004
Location: Sweden
Distribution: Kubuntu Feisty, Fedora Core 3
Posts: 22

Original Poster
Rep: Reputation: 15
Quote:
Originally Posted by michaelk View Post
I suspect the <32GB jumper is installed.
Yes, but it isn't. I double checked. It has never been set and I've always used the full 80 GB.
 
Old 07-29-2008, 04:34 PM   #4
jonsson
LQ Newbie
 
Registered: Sep 2004
Location: Sweden
Distribution: Kubuntu Feisty, Fedora Core 3
Posts: 22

Original Poster
Rep: Reputation: 15
Solved, please explain why this worked?

I had more or less given up when I got the crazy(?) idea to try and change the jumper settings. The disk could be set to 15 or 16 heads. It has always been set to 16 so I tried changing to 15. That worked! Linux now understood that the disk has another 40 GB and I could create, format and use an 82 GB partition.

Can someone explain what the 15/16 head setting is for and if it makes a difference? Theories about why this solved my problem are also very welcome.
 
  


Reply


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
Linux as USB disk khtw Linux - General 3 09-22-2007 09:11 PM
60GB laptop hard disk & 200GB external USB hard disk linux compatibility powah Linux - Hardware 0 03-07-2006 10:55 AM
Linux sees 2003 Domain, windows sees Linux ..but.... Stealthy_C Linux - Networking 4 06-14-2005 03:27 PM
USB Webcam - C2Final InfoCentre sees it but what now? ericcarlson Fedora 2 07-20-2004 09:16 PM


All times are GMT -5. The time now is 08:50 AM.

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