RSX11M Boot disk

Need some help making a disk bootable under RSX11M V4.6 (not Plus). Need to copy a bootable system volume to another. Usually I use standalone BRU with no problem. Problem (I think) is that I have 2 MSCP controllers, one drive on one controller, other drive on the other controller and their low level formats aren't compatible so can't swap drives around. Unfortunately I have no working tape drive at the moment either. (I do have 5 TK50's with tapes hanging out their mouths though). Dragged out a Cipher 550 cartridge tape drive, plugged in MSV05 controller (MS:), bought some new DC600A tapes after the ones I had in the attic for 10 years didn't work, but it didn't work either. Disk and controller configuration is: An Emulex QD01 controller CSR=172150 Vec=154 (Standard MSCP address) with an RD54 as DU1: This is the system disk and it hardware boots fine into M. And a RQDX3 CSR=172154 Vec=150 (Secondary) with an RD32 that shows up as DU4: under M. I can BAD it, INI it, MOU it etc. -- drive works fine. Using standalone BRU to copy DU1: to DU4: it gives error -65 (device offline - it can't see it) for DU4: Ok, I use CNF to change DU4: to alternate CSR, it give me error -65 on DU1: Apparantly CNF changes DU CSR for both drives. (I did find I could make standalone BRU bootable RX33's though which I did as they boot much faster than TK50.) So, standalone BRU not working as I wanted, I made the RD32 DU4: drive a Files11 volume (BAD, INI etc.) Created all the UFD's from DU1: (system disk) on DU4: (target). (Still haven't found anything better than TECO for making command files have a PC version of TECO I use today) I then copied all the files to the target disk: BRU/NOI/MOU DU1: DU4: Worked fine. I can mount DU4: and look at all the files fine. But, how do I make DU4: bootable as DU0: on an RQDX3 at standard address of 172150?? VMR and SAV only seem to work on the current SYSTEM disk, not a target. For example, tried to VMR DU4:[1,54]RSX11M.SYS --- no joy. When I try to boot the DU4: on another system, it give me what INI wrote in the boot block: "THIS VOLUME DOES NOT CONTAIN A HARDWARE BOOTABLE SYSTEM" Any suggestions on how to make DU4: bootable? Best I could find Googling was: http://www.miim.com/faq/hardware/diskfaq.html#mscrscpy But I don't see how that effects a drive other than SY: Any help would be appreciated. Thanks, Ed Kelleher