Drives on PDP-11

I have a full backup of the drive via COPY. I would like to graft a different hard disk onto this machine. I have available in ST506-type is a fujitsu 40mb and a seagate st4096. How do connect the second drive? There are connections for a second drive but both are on the machine and not with the 34 pin connector daisy-chained to the first drive as is normal. Do I terminate each drive in this "Y" configuration? What drive number should it be? Drive 4 I suspect as the first and only hard disk is set at 3 and is terminated. How would I configure drive geometry to match the drive I am installing? The object of installing a second hard disk is to create a bootable clone of the first one. A bump in disk space is allways cool but I want a bootable clone as a backup at least. Does the ST506-type controller have enough Shugart SA400 about it that it is running the floppies as drive id's 1 and 2? It would explain a lot. How difficult is it to substitute a standard double-sided floppy mech for the wierd but nifty-looking floppy drives that are in it now? For those of you still wondering, it has an RX50-AA double-drive unit that cannot be formatted by the computer but can be read. Will I be able to format media on the machine if I DO replace the drives? Can I substitute a standared 40trk X DS X DD mechanism or an 1.2mb 5.25" mech to accomplish this? The connections look standard though I have not opened the base enclosure for the floppy mechanism for a look at it's cabling yet. Thanks all -- ----------------------------------------------------------- Jeffrey S. Worley Technical Services Bits & Bytes Computer Services Inc. 1979B Hendersonville Road Asheville, NC 28803 828-684-8953 - voice 0900-1700 five days 828-687-9284 - 24hr fax Who is General Failure and why is he reading my hard disk? Technoid(a)Cheta.net -----------------------------------------------------------