Make a disk bootable in RT-11

In the end it was very easy to get my winchester drive to be bootable.  I just had to read the manual really...  This was what I used:

copy/boot dk0:rt11xm.sys dk0:

The trick is to already have a copy of the boot-file (RT11XM.SYS in my case) on the disk.  The "copy/boot" command then just moves the file from one part of the disk, to the boot section.  Easy.

I used that to make my Winchester Drive bootable, so now I'm booting straight from the fixed disk.