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Mount of USB disk fails
Posted by: pas ()
Date: August 20, 2009 07:41AM

I have hooked up the USB host port as described in the FAQ section and my USB flash drive is recognized but I can't mount the file system. When the drive is detected I get the following in dmesg:

usb 1-1: new full speed USB device using at91_ohci and address 7
usb 1-1: configuration #1 chosen from 1 choice
scsi3 : SCSI emulation for USB Mass Storage devices
scsi 3:0:0:0: Direct-Access USB DISK 2.0 PMAP PQ: 0 ANSI: 0 CCS
SCSI device sda: 31277056 512-byte hdwr sectors (16014 Mcool smiley
sda: Write Protect is off
sda: assuming drive cache: write through
SCSI device sda: 31277056 512-byte hdwr sectors (16014 Mcool smiley
sda: Write Protect is off
sda: assuming drive cache: write through
sda: sda1
sd 3:0:0:0: Attached scsi removable disk sda

All looks good so I then try to mount the drive:

root@snapper:~$ mount /dev/sda1 /mnt
mount: mounting /dev/sda1 on /mnt failed: No such device or address

Both /dev/sda1 and /mnt exist and the USB is formatted as ext2.

Any clues?

Thanks,

Pete

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Re: Mount of USB disk fails
Posted by: andre ()
Date: August 28, 2009 01:34PM

Sorry for the delayed response - I believe for a period the /dev/sd* files had the incorrect major/minor numbers set up in the root filesystem. To make sure do an
ls -l /dev/sda*

They should look like this:
brw-rw---- 1 root root 8, 0 2009-07-02 23:42 /dev/sda
brw-rw---- 1 root root 8, 1 2009-07-02 23:42 /dev/sda1

If they don't, do the following:
rm /dev/sda*
mknod /dev/sda b 8 0
mknod /dev/sda1 b 8 1

After this the mount should work.

Regards,
Andre Renaud

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Re: Mount of USB disk fails
Posted by: pas ()
Date: August 31, 2009 09:32AM

Thanks, that fixed it.

Pete

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