On 06/07/2012 07:42 PM, Bob Armstrong wrote: Lunchboxes! :-) And there are images for new boot ROMs available for those which will allow you to boot from the on-board SCSI host adapter, ... I've heard of this, but I haven't seen it. As I recall, the onboard SCSI adapter uses programmed I/O (no DMA!) so it's really slow. For a TK50 nobody would ever notice, but for the system disk it's a problem. Better to cluster boot one, diskless. That'd likely be faster! I'm thinking of the case where one would want a standalone machine, and the XT2190/RD54 is as capacious as MFM gets. Having never run a '2000 via its SCSI host adapter myself, only the MFM interface, I'd have to wonder whether the bottleneck would be that PIO-accessed NCR5380 or the 78032 itself! FWIW, an RD54 isn't necessary. The 2000 can easily be convinced to use _any_ MFM drive, DEC or not. You can get VMS V4 on a 30 meg drive, maybe even 20, if you're determined. Long ago I wrote up a little description of all the VS 2000 disk formatter parameters, what they meant, and how to fake them for non-DEC drives. Google ancient Usenet postings if you're interested. I've had a copy of that archived away for many, many years. :-) -Dave -- Dave McGuire, AK4HZ New Kensington, PA