I hope your whole database is not on /disk1. If so there is only 35MB there now. "/dev/hdd7 2.0G 36M 1.9G 2% /disk1"

So how am I going to search through you server and find the missing control file? Is there anything in /disk1/sun/controlfile? Did someone delete the control file? Did someone delete the database? Did this database ever start before? Where is your backup?