UNIX for Advanced & Expert Users

Can someone explain to me why I cannot access or change anything to my solaris /home directory on my sun machine? It has permissions of dr-xr-xr-x so I tried to change them to chmod +w /home, tried chmod 755 /home tried chmod -R 755 home and it always says operation unavailable. And I'm in as root, and I also tried logging in as a user and performing su to root and still wouldn't work.
It acts like its a device, like a cdrom, can't write, change attributes.

Thanks!

This is probably happening because it's a NFS mount from a file server for home directories. You can check this by going to your home directory and do the following:

$ df -k .
Filesystem kbytes used avail capacity Mounted on
toast1.mydomain.com:/vol/home0/home/rtm
75905928 28461384 47444544 38% /home/rtm

In this case, a system named toast1 is serving the home directories out. You will need to either go to that system to make any changes (not suggested since you were trying to change /home and not your own directory) or get with the Administrator who runs that server. Normally there can be other servers which are allowed to administer the files along with the actual system.