Share your knowledge at the LQ Wiki.
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 08-31-2005, 08:05 AM   #1
LQ Newbie
Registered: Jul 2005
Posts: 27

Rep: Reputation: 15
USB Drives, Icons & Setup

I'm using Mandrake Linux 10.1 on a Compaq Deskpro PC which has two USB ports. I recently plugged in a 64MB 'flashdrive' into the USB port, and was delighted to find that Linux not only found the disk drive automatically, but also mounted the disk and showed it as an icon (both under Gnome and KDE) with the correct name. Files put on the USB drive by Windows 2000 could be read, and I was able to write new files to the drive. When I'd completed this I dismounted the drive using the "umount" command before removing the drive from the USB port, and the drive icon disappeared from the KDE (and Gnome) screen.

My problem arose when I later re-inserted the drive into the USB port. Whilst the drive lights flashed, the icons did not reappear and the device had to be mounted manually. Whilst this is OK, it lacks the convenience of what happened beforehand. How can the original situation be restored such that it happens each time the drive is inserted? How should I remove the memory stick from the USB port - simply pull it out, or is some form of "umount" or equivalent command required (as for Windows) beforehand?

I noticed that the device appears as a SCSI drive. As I already have a SCSI disk 'sda1' on the system, the USB pen drive was seen as 'sdb1'. I don't know if this has any bearing on the problems I'm experiencing.

I subsequently went on to connect a USB-based memory card reader to the same USB port. Under Windows this appears a 4 drives, and under Linux I expected a similar result. However, no drives were detected at all, even though one slot contained a compact-flash card! Are there problems with detecting such devices in Linux? My hope was to be able to archive the JPEG files on the card from my camera onto the hard disk before processing them using the GIMP.

I hope you can cast some light on these problems!
Old 08-31-2005, 08:32 AM   #2
Registered: Nov 2004
Location: BIOS
Distribution: RHEL3.0, FreeBSD 5.x, Debian 3.x, Soaris x86 v10
Posts: 379

Rep: Reputation: 30
SCSI devices such as /dev/sda use to represent USB pen/stick and equivalent partitions are used. So this is normal.

Yup use umount command to unmount it (before that issue sync command):

umount /dev/sdb1
For more info see USB Flash Memory HOWTO and small quick howto to mount/umount/format flash memory/pen drive

Hope this helps!
Old 09-02-2005, 07:25 AM   #3
LQ Newbie
Registered: Jul 2005
Posts: 27

Original Poster
Rep: Reputation: 15
Thank you for your response, and the various references which I've now read. I was also not aware of the 'sync' command and will use this in future.

Since my original posting I've noticed that if the pen drive is attached at boot-up, the drive is correctly detected, an icon displayed on KDE (and presumably also GNOME), and /etc/fstab has been updated. If you dismount the device after using it, the icon disappears as you would expect. However, my problem arises if then re-insert the pen drive as the drive icon does not reappear and the mounting has to be done manually. Is there an option in KDE or elsewhere whereby this remounting on replugging can be automatically performed?


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
Hard drives start at hdc && fdisk doesn't show hde triet Linux - Hardware 0 11-03-2004 09:25 PM
Give user permission to mount/use cdrom drives or usb drives zwyrbla Linux - Newbie 2 08-23-2004 04:30 PM
Samba & IPTABLES & Network Drives Oh My! logicdisaster Linux - Networking 3 06-03-2004 06:07 PM
HP Deskjet (USB) & CUPS & Slackware 9.1: Unable to open USB device "usb:/dev/usb/lp0&qu arnostienen Slackware 2 01-29-2004 03:22 PM
howto setup Cable modem&router&red hat on machine with ethernet integrated on mobo&XP takanana Linux - Networking 14 10-23-2003 07:20 AM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 08:05 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
Open Source Consulting | Domain Registration