How to Find Out Which File Systems are Mounted on What Disk Slices

If you know the disk and slice number, you can display information for a disk using the prtvtoc (print volume table of contents) command. You can specify the volume by specifying any non-zero-size slice defined on the disk (for example, /dev/rdsk/c0t3d0s2 for all of disk 3, or /dev/rdsk/c0t3d0s7 for the eighth slice of disk 3). If you know the target number of the disk, but do not know how it is divided into slices, you can show information for the entire disk by specifying either slice 2 or slice 0.

1. Become superuser.

2. Display disk and slice information.

   # prtvtoc /dev/rdsk/devicename

   /dev/rdsk/device-name

   Is the name of the raw device containing the file system you want to identify.

Example--Finding Out Which File Systems are Mounted on What Disk Slices

In this example, information is displayed for all of disk 3:

$ su
Password:
# prtvtoc /dev/rdsk/c0t3d0s2
* /dev/rdsk/c0t3d0s2 (volume "") partition map
*
* Dimensions:
*     512 bytes/sector
*      36 sectors/track
*       9 tracks/cylinder
*     324 sectors/cylinder
*    1272 cylinders
*    1254 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector    Count     Sector  Mount
Directory
       2      5    01          0    406296    406295
       6      4    00          0    242352    242351
       7      0    00     242352    163944    406295   /files7