Dear all: I try to mount usb flash on my embedded system. But I get the error message as "Invalid argument". (I attach the log at the end of letter) >From the log, it seems scsi driver address the usb flash as sda1 and /dev/sda1 node has been created as block device with (8,0), (major, minor) number. I also have create /mnt there. Did I forget something? appreciate your help, miloody usb 1-1: new high speed USB device using ehci and address 4 usb 1-1: Product: Mass Storage Device usb 1-1: Manufacturer: JetFlash usb 1-1: SerialNumber: H7DXB40C usb 1-1: configuration #1 chosen from 1 choice scsi2 : SCSI emulation for USB Mass Storage devices Vendor: JetFlash Model: TS4GJFV30 Rev: 8.07 Type: Direct-Access ANSI SCSI revision: 02 SCSI device sda: 7987198 512-byte hdwr sectors (4089 MB) sda: Write Protect is off sda: assuming drive cache: write through SCSI device sda: 7987198 512-byte hdwr sectors (4089 MB) sda: Write Protect is off sda: assuming drive cache: write through sda:<7>usb-storage: queuecommand called sda1 sd 2:0:0:0: Attached scsi removable disk sda sd 2:0:0:0: Attached scsi generic sg0 type 0 /temp # mount -t vfat /dev/sda1 /mnt/ mount: mounting /dev/sda1 on /mnt/ failed: Invalid argument /temp # ls /dev -l crw------- 1 500 500 5, 1 Jan 1 00:00 console drwxr-xr-x 3 0 0 0 Jan 1 00:00 dvb crw-r--r-- 1 500 500 1, 1 Jan 1 00:00 mem crw-r--r-- 1 0 0 1, 3 Jan 1 00:00 null crw-rw-rw- 1 0 0 1, 8 Jan 1 00:00 random crw-r--r-- 1 0 0 10, 135 Jan 1 00:00 rtc brw-r--r-- 1 0 0 8, 0 Jan 1 00:00 sda1 crw-r--r-- 1 500 500 5, 0 Jan 1 00:00 tty crw------- 1 500 500 4, 64 Jan 1 00:34 ttyS0 crw-r--r-- 1 0 0 4, 65 Jan 1 00:00 ttyS1 crw-r--r-- 1 0 0 10, 130 Jan 1 00:00 watchdog crw-rw-rw- 1 0 0 1, 5 Jan 1 00:00 zero /temp # ls / -l drwxr-xr-x 2 0 0 0 Jan 1 00:00 bin drwxr-xr-x 3 0 0 0 Jan 1 00:09 dev drwxr-xr-x 3 0 0 0 Jan 1 00:00 etc lrwxrwxrwx 1 500 500 11 Jan 1 00:00 init -> bin/busybox drwxr-xr-x 2 0 0 0 Jan 1 00:00 lib drwxr-xr-x 2 0 0 0 Jan 1 00:05 mnt dr-xr-xr-x 28 0 0 0 Jan 1 00:00 proc drwxr-xr-x 2 0 0 0 Jan 1 00:00 sbin drwxr-xr-x 10 0 0 0 Jan 1 00:00 sys drwxr-xr-x 2 0 0 0 Jan 1 00:00 temp drwxr-xr-x 3 0 0 0 Jan 1 00:00 usr -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ