15 Mar
2002
15 Mar
'02
10:27 a.m.
Tom Leffingwell wrote:
On Tue, 12 Mar
2002, Zane H. Healy wrote:
Yes, it is possible. The real trick is finding a SCSI CD-ROM that will work
with your SCSI Adapter! In my case I'm using a Viking QDT with a DEC RRD-42
drive (I think that's the right drive, it's the one that uses standard
caddies).
Yeah, the RRD40 was the one with the special DEC caddies where you
never
had to touch the CD. I think I still have one somewhere. RRD42 used the
standard caddies, and was double speed I believe. RRD43 was the one where
the disk snapped into it, and the RRD45 was the 4x speed tray one, and the
RRD46 was the 12x speed tray one. I'll have to see what I have. Its more
than likely going to be an RRD43 though, but I would think it would work. I feel a lot
safer being able to restore from CD's rather than old
flakey TK50's. Basically you just burn a disk image of a HD that's
been built on that controller to a CD-R. I've done this for RT-11,
RSX-11M, and RSX-11M+. Of the three RT-11 complains the least about
being on CD. The two RSX's I tried *really* don't like it, but appear
to come up enough that I should be able to copy them to a real HD.
I may give this
a shot then. I think its my best option. from an ESDI hard drive which is in WRITE PROTECT
mode (a hardware selection via a jumper), the only problem
I see is being able to read the first 64 blocks of the CD on
partition zero - and of course setting up an RT-11 partition
starting at block zero of the CD.
Has anyone solved these two problems?
Sincerely yours,
Jerome Fine