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USB Mass Storage Device

DISCUSSION Douglas Gilbert 2 participants 2 messages Apr 12, 2003

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Quoted 11 lines · Jim Bean

The following USB Mass Storage device is found during bootup:

scsi0 : SCSI emulation for USB
Mass Storage devices
Vendor: SOYO Model: USB Storage-SMC Rev: 0214
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0

Is it a CompactFlash reader that plugs directly into a USB1 header on my motherboard.

Quoted 8 lines

/sys/bus/scsi/devices/0:0:0:0/* contains information regarding the device, however there is nothing /dev/scsi/host0/bus0/target0/lun0 for me to mount, regardless of whether there is a card in the drive or not. I have hotplug enables, and inserting a card in the drive does not generate any new messages under dmesg (although verbosity stuff is not enabled). Is this device not yet supported, or am I missing something that I need to enable?

Jim,
Have a look in /var/log/messages for errors coming from the sd driver (e.g. it could be stuck on a READ CAPACITY or MODE SENSE command). Other than that it could be a problem with devfs. You could make a temporary device node (e.g. 'cd /root; mknod my_sda b 8 0') then try fdisk on my_sda.

Doug Gilbert

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Quoted 5 lines · Douglas Gilbert

Have a look in /var/log/messages for errors coming from the sd driver (e.g. it could be stuck on a READ CAPACITY or MODE SENSE command). Other than that it could be a problem with devfs. You could make a temporary device node (e.g. 'cd /root; mknod my_sda b 8 0') then try fdisk on my_sda.

I see the same problem here without devfs.

The device does not even register itself as a block device. I.e., on boot it is detected and listed as sda but no sda* device is a valid block device. /sys/block/ does not list it.

Also no errors in dmesg...

Robert Love