还有可以用format查看一下
如
bash-2.05# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0d0 <DEFAULT cyl 38768 alt 2 hd 16 sec 63>;
/pci@0,0/pci-ide@1f,1/ide@0/cmdk@0,0
1. c2t0d0 <drive type unknown>;这个是U盘
/pci@0,0/pci8086,5752@1f,4/storage@1/disk@0,0
Specify disk (enter its number):