flash drive dev link changes each time I plug it in

procfs · 07-16-2006, 10:52 PM

HI

I am using Redhat 3 with update 7 and each time I plug in a flash drive I get a different /dev/ link like /dev/sda, /dev/sdb, so on. I am not using any thing fancy just a standard machine with IED harddisk.

Why is this happenning

Regards

Asanka

firstfire · 07-17-2006, 07:06 AM

Hello.

I think your problem is 'umount'. If you do not unmount flashcard, then, on next time you will plug it in, device will be associated with differ file in /dev directory, because /dev/sda is busy. So just unmount it:

Code:

umount /dev/sda

Good luck.

burninGpi · 07-17-2006, 01:07 PM

It will be different if you have more than one flash drive. For example, if you plug one flash drive in, then plug yours in, yours will be sdb. The first one will be sda.

procfs · 07-17-2006, 10:13 PM

HI thanks for the replies

yes I do unmount it before I remove the drive, and I am using only one drive and a usb mouse.

Even tho the mouse remains on the same pore each time I plug in the flash I get a different /dev association

Best Regards

Asanka

LSD · 07-18-2006, 08:58 AM

I'm not familiar with the latest versions of Red Hat but if they include udev for device node management you can set up a udev rule that'll ensure the flash drive will get the same dev node each time you plug it in. I'm fuzzy on the details but google should set you up with a few good tutorials on how to go about setting it all up.

procfs · 07-19-2006, 06:24 AM

Thanks guys

Regards

Asanka

procfs · 07-31-2006, 12:41 AM

Hay guys

This is not the same issue

I have a 128 M kingston flash drive and this is formated using fat32. When I plug this in to a linux (any) box he recodnice this as /dev/sdb not as /dev/sdb1 or 2 etc

I can mount this as mount /dev/sdb /mnt/usb

And access the drive there is no problem. But I want to know why it happens only with my drive

Thanks

Regards
Asanka