On 2015-03-03 22:40, Rhialto wrote:
On Tue 03 Mar 2015 at 22:08:29 +0100, Johnny Billquist wrote:
attach tm0 BB-J0830-01.M01_RSX11M+_V4.6_1999.tap
This would be the full system.
attach tm1 BB-J0830-01.L01_RSX11M+_V4.6_BRU_1999.tap
This is slightly weird, as the normal RSX distribution of V4.6 is just one
tape that holds both BRUSYS and the distribution.
Hm weird, since going by the file sizes, the L file is the larger one,
and not bootable.
Weird stuff indeed.
11M BB-J0830-01.M01_RSX11M+_V4.6_1999.tap <-- booted off this one
30M BB-J0830-01.L01_RSX11M+_V4.6_BRU_1999.tap <-- contains the string
***THIS VOLUME DOES NOT CONTAIN A HARDWARE BOOTABLE SYSTEM ***
near the start
I actually tried booting it once, and it then prints the string.
I suspect that second tape is not bootable then. I wonder where these
tapes came from...? They do not seem to be the original distribution tape.
To make things clear, tapes and disks which are not bootable actually
have a boot block, which only prints that message to the console, and
then halts the cpu.
The BRU tape, which was separate in older systems, held only the BRUSYS
image, which you booted. And then you needed to switch tapes to the
distribution tape, to restore from.
Seemingly that is still true with these files despite different names.
Of course the pdf I have is for installing 4.3 and calls the boot tape
BRUSYS.
http://www.mirrorservice.org/sites/www.bitsavers.org/pdf/dec/pdp11/rsx11/RSX11Mplus_V4.x/2a/AA-H431H-TC_RSX-11M-PLUS_4.3_System_Generation_and_Installation_Guide_Jan90.pdf
Yes. V4.3 was distributed on two tapes. But the BRUSYS tape is really small.
It don't look like the tapes you have match a proper distribution. The
"smaller" tape file do seem to have a BRUSYS image on it, but probably
have some other stuff as well, based on the size of the thing.
The "large" tape seems to have a full system, but exactly what is in
there, I have no idea.
I wonder why the M tape is so large; applying "strings" to it shows lots
of stuff including Macro-11 source files.
Could it still be, like that manual suggests in section 2.2.1 on page
2-5, that it is indeed "BRUSYS Standalone Copy System and Layered
Product Corrections"?
I don't think so. Sounds more like someone did a backup of a just
installed/booted system on tape...
Oh, still haven't had much time to look at Kermit :(
No worry. :-)
Johnny
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