>C H Dickman wrote:
I then took a 3.5" NEC D3142 drive that came out
of an old NEC PC
and it formatted in the Pro just fine.
Jerome
Fine replies:
I have heard that it is possible to format an RD52 on the PRO,
in addition to the RD51, so I am not surprised. How many blocks
are on the NEC D3142 drive.
The drive itself is about 42MB. The RT-11 filesystem on the disk has
65535 or around that number.
Jerome Fine replies:
All device under RT-11 have a maximum of 65536 blocks.
However, RT-11 is set up to use only 65535 blocks since
that is all that fits into a 16 bit word. In actual practice, it
is quite easy to use the extra block, but in almost all cases,
it is not worth the extra effort since none of the RT-11
utilities will support you.
If you have V05.03 of RT-11 or later, you might be able
to use those additional 10 MB of hard drive. The command:
SHOW DEVICE:DW
might provide the list of available devices in the same manner
as MSCP devices for the DU.SYS device driver. If you can
wait a few days, I will also have a look at the code in DW.MAC
and RESORC. However, the more I think about it, the less
likely I feel that DEC would have allowed RT-11 partitions
on the PRO hard drives.
Since there is
no documentation
on the PRO hardware, can anyone suggest anything?
The Pro Tech Manuals are on bitsavers.
Can anyone identify the actual files on bitsavers?
Is there anything there about the hard drive (is
DW the correct name) being partitioned if it is
larger than 32 MB?
Sincerely yours,
Jerome Fine
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