How to increase file system in solaris 8 and 9?

Hi,

I would like to ask help on how to increase the file system in solaris 8 and 9. See below mounted file system:

Solaris 8:

bash-2.03# df -k

Filesystem            kbytes    used   avail capacity  Mounted on

/                    93886897 4379465 88568564     5%    /

/.SUNWnative/lib     7224317 4665432 2486642    66%    /.SUNWnative/lib

/.SUNWnative/platform

                     7224317 4665432 2486642    66%    /.SUNWnative/platform

/.SUNWnative/usr     7224317 4665432 2486642    66%    /.SUNWnative/usr

/dev                 93886897 4379465 88568564     5%    /dev

proc                       0       0       0     0%    /proc

mnttab                     0       0       0     0%    /etc/mnttab

swap                 7946152      16 7946136     1%    /etc/svc/volatile

/dev/ksyms           7224317 4665432 2486642    66%    /dev/ksyms

fd                         0       0       0     0%    /dev/fd

swap                 7946152      16 7946136     1%    /tmp

Solaris 9:

Filesystem	size   used  avail capacity  Mounted on
/	90G   6.0G	83G	7%	/
/.SUNWnative/lib	6.9G   4.5G   2.4G	66%	/.SUNWnative/lib

/.SUNWnative/platform

	6.9G   4.5G   2.4G	66%	/.SUNWnative/platform
/.SUNWnative/usr	6.9G   4.5G   2.4G	66%	/.SUNWnative/usr
/dev	90G   6.0G