How to Mount or Unmount a USB Mass Storage Device

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The following steps illustrate how to mount and unmount a USB mass storage device.

Become an administrator.

(Optional) Identify the device.

$ rmformat

The following example identifies a physical diskette device as c2t0d0p0.

$ rmformat
Looking for devices...
1. Logical Node: /dev/rdsk/c3t0d0p0
Physical Node: /pci@0,0/pci108e,534a@2,1/storage@3/disk@0,0
Connected Device: SanDisk  Cruzer Micro     0.3
Device Type: Removable
Bus: USB
Size: 245.0 MB
Label: <None>
Access permissions: Medium is not write protected.

Select one of the following to mount or unmount a USB mass storage device:
- Mount a USB mass storage device as a console user.
  
  You can use the rmmount command with device nicknames, mount points, or device paths, similar to the following:
```
$ rmmount rmdisk0
$ rmmount NONAME
$ rmmount /dev/dsk/c3t0d0p0:1
```
  The following example mounts c2t0d0p0 whose mount point is NONAME.
```
$ rmmount NONAME
NONAME /dev/dsk/c2t0d0p0 mounted
$ ls /media/NONAME
AA.TXT
```
- Unmount a USB mass storage device as a console user.
  
  The following example unmounts c2t0d0p0 whose mount point is NONAME.
```
$ rmumount NONAME
NONAME /dev/dsk/c2t0d0p0 unmounted
```
- Mount a USB mass storage device as superuser.
  
  The following example mounts c1t0d0s2 with a UFS file system:
```
$ mount /dev/dsk/c1t0d0s2 /mnt
```
  The following example mounts c3t0d0s2 with a PCFS file system on a SPARC system:
```
$ mount -F pcfs /dev/dsk/c3t0d0s2:c /mnt
```
  The following example mounts c3t0d0p0 with a PCFS file system on an x86 system:
```
$ mount -F pcfs /dev/dsk/c3t0d0p0:c /mnt
```
  The following example mounts c1t0d0s2 with a read-only HSFS file system:
```
$ mount -F hsfs -o ro /dev/dsk/c1t0d0s2 /mnt
```
- Unmount a USB mass storage device as superuser.
  
  The following example unmounts a storage devise.
```
$ fuser -c -u /mnt
$ umount /mnt
```
Eject the device.
This step is optional for DVD, CD, or diskette devices.
```
$ eject /dev/rdsk/c1t0d0s2
```
The following example ejects c1t0d0s2.