how to make less capacity /dev/dsk/c1t0d0s5

UNIX Solaris
1

how to make less capacity on /dev/dsk/c1t0d0s5

Filesystem             size   used  avail capacity  Mounted on
/dev/dsk/c1t0d0s0      9.6G   2.3G   7.2G    25%    /
/dev/dsk/c1t0d0s1      9.6G   4.1G   5.4G    44%    /usr
/dev/dsk/c1t0d0s4      9.6G    81M   9.4G     1%    /var
/dev/dsk/c1t1d0s0       67G    25G    42G    38%    /oracle
/dev/dsk/c1t0d0s5       28G    22G   5.3G    81%    /app
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backup the data in /app. boot the server from external media (dvd; network). use "format" to recreate the slice 5 (in the size you need it) and use "newfs" on slice 5. boot the server and restore the data.
if you need the data in /app at boot time you need to restore the data BEFORE booting from the internal disk!

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