On occasion if you are trying to fdisk or mount a USB disk on Solaris 10 you may get an error that says "Cannot open device." For example:
# fdisk /dev/rdsk/c2t0d0s2 Cannot open deviceThings to check:
- 1. Make sure you are root or have the correct user privilege
- 2. Try `devfsadm -Cv` to remove any stale disk entries
- 3. Stop volume management `svcadm disable volfs`
13:27 PST - June 9, 2010