SCSI
From Blue-IT.org Wiki
Reset SCSI bus
Works with Ubuntu 11.10 .
Search for the script rescan-scsi-bus.sh.
Install the scscitools (and optionally sg3-utils) package:
sudo apt-get install sg3-utils scsitools
- Power off your device
- Remove the device from the kernel with
rescan-scsi-bus.sh -r
- Switch on the device
- Wait until it is ready
- Rescan the bus
rescan-scsi-bus.sh
Your device should be ready to use now.