Warren, Good news so far. I did some work on VTserver 2.0, and added the uODT code so it uploads the PDP-11 boot code to the machine and gets it going. That works fine.. "copy" gets loaded, and I can transfer stuff from and to the machine's RX50 and RD51 units. My biggest worry next, of course, is using an emulator to emulate my machine (which is a MicroPDP-11/23, by the way) and its disks, and build a working set of file systems. Those I can then transfer to the raw disk. When playing, I noticed that the RD51 is a plain Seagate ST412 MFM drive... did anyone try to use other MFM disks with the RQDX series controllers? I can probably get some very cheap ST251 40MB drives.. ;) --fred ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ********************************************************************** Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id TAA58787 for pups-liszt; Fri, 16 Feb 2001 19:14:03 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) Received: from mud.stack.nl (mud.stack.nl [131.155.141.98]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id TAA58783 for &lt;pups(a)minnie.cs.adfa.edu.au&gt;; Fri, 16 Feb 2001 19:13:59 +1100 (EST) (envelope-from martijnb(a)stack.nl) Received: by mud.stack.nl (Postfix, from userid 587) id 3C30C7F07; Fri, 16 Feb 2001 09:11:02 +0100 (CET) Date: Fri, 16 Feb 2001 09:11:02 +0100 From: Martijn van Buul &lt;pino(a)dohd.org&gt; To: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] RE: Unix Archive mirror site offer Message-ID: &lt;20010216091102.A26535(a)mud.stack.nl&gt; Reply-To: Martijn van Buul &lt;pino(a)dohd.org&gt; References: <6F63E31101C6D41196490008C7B2BFC32C31@MWNT4> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.3i In-Reply-To: <6F63E31101C6D41196490008C7B2BFC32C31@MWNT4>; from Fred.van.Kempen(a)microwalt.nl on Thu, Feb 15, 2001 at 04:01:45AM +0100 Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Fred N. van Kempen wrote: I've done exactly the same thing (but it only was an ST225, AKA RD31) on an RQDX3 controller. You need the XXDP 2.5 diagnostic kit for that. Having a couple of 5.25" HD diskdrives really helps. Some of these drives (the older, the better ;) can be used as RX33 drive, which greatly reduces the problem of creating a XXDP bootdisk with the needed utilities, since you can write these disks in a (second :) 5.25" drive on a standard PC. Finding a supply of 1.2 MB 5.25" disks can be a bigger problem - I'm very happy with my newly found pack of *fresh* disks. I may still have such a diskimage floating around somewhere (Yup, I seem to have). The basic idea is to low-level format the MFM drive, and make it look like a genuine DEC drive. This is a lot easier if the drives you want to use were also sold as DEC drives (which is the case with the ST251 - it's also known as the RD32). If not, you'll have to provide a lot more information about the drive - never really tried that. This said, I sucessfully low-levelled a 21MB Miniscribe (with the same CHS-layout as a ST225) using the RD31 parameters. -- Martijn van Buul - Pino(a)dohd.org - http://www.stack.nl/~martijnb/ Geek code: G-- - Visit OuterSpace: mud.stack.nl 3333 Kees J. Bot: The sum of CPU power and user brain power is a constant. Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id UAA59199 for pups-liszt; Fri, 16 Feb 2001 20:18:56 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au)