how do you create a volume (not sys) in netware 411

NetWare v4.11 is rather old (its also been EOLed for about 4 YEARS), so don't expect it to have all the features of a modern (v6.x) version.

The problem you run into is that prior to NetWare v5, NetWare could only deal with one NetWare Partition per disk. So your ability to use that extra disk space hinges on whether or not the NetWare Partition on that disk encompasses that unused space. If it doesn't, you can either:

1) Give up and let it go unused
2) Upgrade to a newer (and supported) version of NetWare that allows multiple NetWare partitions per disk
3) Get something like Partition Magic that can twiddle with the partition table (make backups first!)

If the NetWare Partition includes that free space, then at the NetWare console prompt, enter --> INSTALL

I don't have NetWare v4.11 in front of me, but there should be a "Disks and Partitions" selection on that menu. You would select the "Create a New Volume" option as I recall. If someone else has NetWare v4.x handy, they may be able to be more specific.

Note that Novell maintains an extensive library of documentation. While NetWare v4.11 is so old they don't include its docs, they do have the docs for its fraternal twin, NetWare v4.2, at http://www.novell.com/documentation/nw42/index.html

You can also create a new volume from NWCONFIG, though it's been a LOOONG time since I've done that.
I can remember back when 4 first came out. I was so excited I almost dropped my buggy whip...