Question : How to fix - File system full on disk - error during reboot?

We are using the OS : Compaq Tru64 UNIX V5.1 (Rev. 732)

During reboot we are getting "File system full on disk" error.  Any help will be greatly appreciated.

Thanks

Answer : How to fix - File system full on disk - error during reboot?

Check the output of df to see which filesystem is full. It's very likely the /var file system.
You just need to delete unnecessary files or increase the file system size.