Mass storage devices overview

Displaying information about media

To display VTOC information, enter

prtvtoc special_file
where special_file is the path to slice 0 of the raw device file (such as /dev/rdsk/c0b0t1d0s0). See prtvtoc(1M).
To display a device name for a mounted filesystem, enter

devnm filesystem
where filesystem is the name of a mounted filesystem (such as /var). See devnm(1M).
To display the number of free blocks and virtual nodes, enter
```
   df
```
You may also use df(1M) to display information about the generic superblock for mounted or unmounted filesystems, directories, or unmounted resources. The du(1M) command is also useful for summarizing disk usage.
To display information about a cpio file on a cartridge tape, enter

cpio -it < special_file
where special_file is the path to the raw device file to the cartridge tape device (such as /dev/rmt/c0s0). The -it options of the cpio command print a table of contents of the data on the tape. See cpio(1).