Hi!
My Linux 3.0.1 system seems to not automatically detect the partition table on
my Sony Ericsson T707 mobile phone USB mass storage devices. After connecting it
to the USB port on my computer, I get the following additional lines in the
kernel log:
usb 1-1: new high speed USB device number 5 using ehci_hcd
usb 1-1: New USB device found, idVendor=0fce, idProduct=e11d
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Memory Card (MSC)
usb 1-1: Manufacturer: Sony Ericsson
usb 1-1: SerialNumber: 3545170352001900
Initializing USB Mass Storage driver...
scsi6 : usb-storage 1-1:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 6:0:0:0: Direct-Access Sony Eri Memory Card 0000 PQ: 0 ANSI: 0
scsi 6:0:0:1: Direct-Access Sony Eri Memory Card 0000 PQ: 0 ANSI: 0
sd 6:0:0:0: Attached scsi generic sg2 type 0
sd 6:0:0:1: Attached scsi generic sg3 type 0
sd 6:0:0:0: [sdb] Attached SCSI removable disk
sd 6:0:0:1: [sdc] Attached SCSI removable disk
There is /dev/sdb and /dev/sdc since the phone has two USB mass storage units.
One for the internal memory and one for the memory card.
However, only /dev/sdb and /dev/sdc are created, not /dev/sdb1 and /dev/sdc1.
If I (as root) run 'fdisk -l /dev/sdc', I get a proper list of partitions:
Disk /dev/sdc: 8002 MB, 8002732032 bytes
184 heads, 35 sectors/track, 2427 cylinders, total 15630336 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 * 4476 15618427 7806976 c W95 FAT32 (LBA)
And after doing this, the /dev/sdc1 has been created, and I can mount the memory
card in the usual fashion. Simultaneously, I get the following in the kernel log:
sd 6:0:0:1: [sdc] 15630336 512-byte logical blocks: (8.00 GB/7.45 GiB)
sd 6:0:0:1: [sdc] Test WP failed, assume Write Enabled
sd 6:0:0:1: [sdc] Asking for cache data failed
sd 6:0:0:1: [sdc] Assuming drive cache: write through
sd 6:0:0:1: [sdc] Test WP failed, assume Write Enabled
sd 6:0:0:1: [sdc] Asking for cache data failed
sd 6:0:0:1: [sdc] Assuming drive cache: write through
sdc: sdc1
But why is the partition /dev/sdc1 not detected automatically, as I am used to
from before. Why must I run the 'fdisk -l' command in order to get the kernel to
detect the existence of /dev/sdc1. Is it not reading the partition table before
I run fdisk?
I don't use any kind of automounting. This is on a Debian Sid system on an Asus
X5DID amd64 laptop running the Linux 3.0.1 kernel.
It does detect the partition automatically on both of my other two USB flash
memory sticks, however.
Best regards
Torquil Sørensen
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