USB mounting failure

February 12, 2009, 07:09:45 PM

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station8

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USB mounting failure

I connect a USB flash drive to the USB port and attempt to mount the drive I get the error message saying that the device is not found.

~ # usb 1-1: USB disconnect, address 2
usb 1-1: new full speed USB device using address 3
~ # mount -t ext2 /dev/sda1 /mnt
mount: Mounting /dev/sda1 on /mnt failed: No such device or address
~ # mount
/dev/ramdisk on / type ext2 (rw)
/proc on /proc type proc (rw,nodiratime)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
devpts on /dev/pts type devpts (rw)
~ #

What could be causing my mount to fail?

February 17, 2009, 09:49:11 AM

#1

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Re: USB mounting failure

Please make sure the USB drive has good physical connection to the USB port. The log message showed that the USB device was detected but did not have USB storage device driver output. Please make sure the kernel built has USB mass storage device driver included. The following shows the kernel log when a USB drive is connected,

usb 1-1.2: new full speed USB device using ep93xx-ohci and address 8
usb 1-1.2: Product: USB DISK 28X
usb 1-1.2: Manufacturer:
usb 1-1.2: SerialNumber: 07651015223D
usb 1-1.2: configuration #1 chosen from 1 choice
scsi3 : SCSI emulation for USB Mass Storage devices
scsi 3:0:0:0: Direct-Access USB DISK 28X PMAP PQ: 0 ANSI: 0 CCS
sd 3:0:0:0: [sda] 2015232 512-byte hardware sectors (1032 MB)
sd 3:0:0:0: [sda] Write Protect is off
sd 3:0:0:0: [sda] Assuming drive cache: write through
sd 3:0:0:0: [sda] 2015232 512-byte hardware sectors (1032 MB)
sd 3:0:0:0: [sda] Write Protect is off
sd 3:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 3:0:0:0: [sda] Attached SCSI removable disk

February 24, 2009, 10:50:13 PM

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station8

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Re: USB mounting failure

The drive does have a good connection to the port, but I fear that the kernel does not support mass storage device USB drives, just HID (see output below). I have not modified the kernel from that which came pre-installed with to board.

From board boot up output:

ep93xxusb ep93xxusb0: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
mice: PS/2 mouse device common for all mice

I have not had experience building a kernel from scratch yet. Any suggestions?