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Old 08-30-2006, 12:31 PM   #1
Registered: Mar 2006
Location: Texas
Distribution: Fedora Project
Posts: 79

Rep: Reputation: 15
cannot mount usb drive,

I created a usb directory in /mnt , then I ran the command
mount /dev/sda1 /mnt/usb
I get a error message saying "mount: /dev/sda1 is not a valid block device"

My usb is LexarMedia (512MB).

I am running Fedora Core. The /dev/sda1 does not exist. I ran the command
dmesg|grep -i usb

usbcore: registered new driver usbfs
usbcore: registered new driver hub
usbcore: registered new driver hiddev
usbcore: registered new driver hid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
Is there something I am doing wrong? Can someone help me with this. Your help is appreciated.

thanks in advance

Last edited by asif2k; 08-30-2006 at 12:45 PM.
Old 08-30-2006, 03:13 PM   #2
Registered: Aug 2005
Posts: 239
Blog Entries: 1

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run dmesg to find the location of the drive.
Old 08-30-2006, 03:22 PM   #3
Registered: Mar 2006
Location: Ohio, USA
Distribution: Red Hat, Fedora, Knoppix,
Posts: 548

Rep: Reputation: 33
unplug your usb device.
Wait a few seconds then plug it back in.
Then type: tail /var/log/messages

This gives me the address of the usb device.

Then do your mount command plugging in the right sd** info.
Old 08-31-2006, 08:00 AM   #4
Registered: Aug 2006
Posts: 34

Rep: Reputation: 15
I had a similar problem with a usb key that wouldn't give me a /dev/sda1 entry, only a /dev/sda one. After one yer of pesting against my Mandrake (it worked with aurox live) I tried mount /dev/sda /mnt/usb instead of complaining about the absence of /dev/sda1. And it worked, cause the data was directly written to the key, without any partitionning.

Also, it may be that linux got a wrong /dev/sda1 position. try this :
dd if=/dev/sda of=/home/you/usbdata.img
and as root :
i=0; while ! mount -o loop,offset="$i" /home/you/usbdata.img /mnt/usb; do echo "$i" i=$[$i+1]; done
This will try getting the begining of your partition.
When you get bored, press control+c.


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