How to Mount or Unmount a USB Mass Storage Device

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

1. Become superuser or console user.

2. (Optional) Identify the device.

   For example:

   $ 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.

   In this example, the physical diskette device is c2t0d0p0.

   Or, identify the nickname for the device. For example:

   $ rmmount -l /dev/dsk/c2t0d0p0 floppy,floppy0,fd,fd0,diskette,diskette0,rdiskette,rdiskette0

3. 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

     For example:

     $ rmmount NONAME NONAME /dev/dsk/c2t0d0p0 mounted $ ls /media/NONAME AA.TXT

   • Unmount a USB mass storage device as a console user.

     For example:

     $ rmumount NONAME NONAME /dev/dsk/c2t0d0p0 unmounted

   • Mount a USB mass storage device as superuser.

     This example shows how to mount a device with a UFS file system:

     # mount /dev/dsk/c1t0d0s2 /mnt

     This example shows how to mount a device with a PCFS file system on a SPARC system:

     # mount -F pcfs /dev/dsk/c3t0d0s2:c /mnt

     This example shows how to mount a device with a PCFS file system on an x86 system:

     # mount -F pcfs /dev/dsk/c3t0d0p0:c /mnt

     This example shows how to mount a CD with a read-only HSFS file system:

     # mount -F hsfs -o ro /dev/dsk/c1t0d0s2 /mnt

   • Unmount a USB mass storage device as superuser.

     First, be sure no one is using the file system on the device.

     For example:

     # fuser -c -u /mnt # umount /mnt

4. Eject the device, which is optional for DVD, CD, or diskette devices.

   For example:

   # eject /dev/rdsk/c1t0d0s2