Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
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?


  Search this Thread
Old 07-08-2010, 09:54 AM   #1
Registered: Feb 2009
Distribution: Slackware
Posts: 110
Blog Entries: 3

Rep: Reputation: 15
USB boot and SATA data drives

I am running the kernel on a RedHat 5.3 X64 bit OS. I am booting off a USB compact flash. When I put two hard drives in a test system the OS does not allow me to access either, however if I have one hard drive inserted I am able to mount the hard drive fine. Extremely strange. When both hard drives are inserted dmesg reports a sde and sdf, it just will not let me access them. I am not sure if this is a hardware issue or OS.

fdisk /dev/sde says unable to open. smartctl -i /dev/sde says NO Medium found. When I boot with only one inserted i am able fdisk. mount, etc... /dev/sde just fine.

The USB controller has 5 slots to insert various media, but I am just using it for its compact flash slot.

Why will the system play nice with one hard drive and not with two?
Old 07-08-2010, 11:55 AM   #2
LQ Guru
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 8,558

Rep: Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862
Check dmesg |tail.
Could be a current issue - overcurrent when the 2 drives are on. The box then switches off the ports. Also check the o/p of
fdisk -l with one and 2 drives attached, to confirm a port issue.
Are the drives identical?
1 members found this post helpful.
Old 07-08-2010, 01:05 PM   #3
Registered: Feb 2009
Distribution: Slackware
Posts: 110
Blog Entries: 3

Original Poster
Rep: Reputation: 15
I was going the wrong direction. fdisk -l showed the error in my ways. For some reason with one hard drive in the system the SATA drive was sde, but with two the SATA hard drives were sda and sdb. Nothing in dmesg or /var/log/messages indicated this to be the case.

The error in my ways were that I was blindly looking incrementing down the alphabet rather than up sdg, sdh. etc...

Thank you for your time.


sata, usb

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
Dual Boot with 2 SATA Drives Luvz2Fly Linux - Newbie 3 01-04-2008 04:52 PM
2 hard drives, XP on my main sata drives, 10.2 on my IDE LILO doesnt show on boot up Dachy Slackware 14 01-03-2008 08:01 AM
dual boot w/ 2 sata drives Mr-Imbroglio Slackware 10 04-05-2007 08:20 PM
Cannot see SATA drives on boot ralley Linux - Newbie 2 12-10-2006 10:34 AM
Can't Boot Live CD - SATA Drives? jeopardyracing Linux - Newbie 9 10-13-2005 05:51 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 08:12 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