This is discussed elsewhere, but I always have a hard time locating the exact command to do this.
Here's how I'm doing it:
for HOST in /sys/class/scsi_host/host*; do echo "- - -" | sudo tee $HOST/scan; done; cat /proc/partitions
If the new device was found, this should result in some syslog messages from the kernel, and a new drive (perhaps
sdb) should now exist in
fdiskshould be run on the new drive to set up partitions and
mkfs.ext3(or some filesystem creation tool) should be run to initialize the partitions as desired.
Update (2010-05-19): Don't use
fdisk -l, check