Hi, I have an external HDD, iomega 80 GB connectet through USB 2.0. The usb ports are part of an expansion card (usb & firewire).
How can I stop and start its spin at will?
You could try hdparm.
This is what happens:
[root@bestiaparda josean]# hdparm -y /dev/sda
operation not supported on SCSI disks
However it works with my IDE disks.
Perhaps you can put it to sleep mode via /proc or /sys then. I can't think of anything else, except scsi specific tools if they exists.
This is the output of:
[josean@bestiaparda josean]$ cat /proc/scsi/usb-storage/0
Host scsi0: usb-storage
Product: Desktop Hard Drive
Serial Number: 7700000000004BB8
Protocol: Transparent SCSI
How can I do what you say?