23 Jul
1998
23 Jul
'98
2:58 p.m.
I have a customer (Yes, Virginia, I have two customers) who has an Epson
QX-10 running CP/M.
His (external) hard disk is reporting bad sectors; he wishes to switch to an
ST-506/412 Vertex 185, which I think is 20 MB.
I would like to test the Vertex 185 under Spinrite (MS-DOS) and expand the
bad track table, if Spinrite discovers more problems.
I have questions --
Will the bad track information carry over under CP/M, and will its format
utility see the MS-DOS info? Otherwise, should we just make a list and enter
it?
Is there a low-level format utility in CP/M? Is it necessary, as under
MS-DOS?
What is the QX-10 controller card going to think of a different hard drive?
Will it try to run the new drive as a 10 MB?
Thanks,
manney(a)lrbcg.com
23 Jul
23 Jul
3:28 p.m.
On Thu, 23 Jul 1998, PG Manney wrote:
I have a customer (Yes, Virginia, I have two
customers) who has an Epson
QX-10 running CP/M.
His (external) hard disk is reporting bad sectors; he wishes to switch to an
ST-506/412 Vertex 185, which I think is 20 MB.
I find no data for the Vertex 185, but it should have at least as many heads
and cylinders as the disk replaced. That is, unless the CP/M HD format
program is more flexible than most.
I would like to test the Vertex 185 under Spinrite
(MS-DOS) and expand the
bad track table, if Spinrite discovers more problems.
I have questions --
Will the bad track information carry over under CP/M, and will its format
utility see the MS-DOS info? Otherwise, should we just make a list and enter
it?
I think not. Most CP/M HD format programs that I have run across do not
offer the facility to enter bad block data. After format, run a program
such as FINDBAD.COM, which will identigy bad blocks and mark them as used
in the USER 15 directory.
Is there a low-level format utility in CP/M? Is it
necessary, as under
MS-DOS?
It is all done in a single operation. No separate LL and HL formats.
The entire disk will be filled with sectors full of 0E5H's.
What is the QX-10 controller card going to think of a
different hard drive?
Probably, won't note it.
Will it try to run the new drive as a 10 MB?
As I said, unless it is a more flexible than most HD format program, it
will format the same number of heads and cylinders as the previous HD.
Thanks,
Your welcome.
- don
manney(a)lrbcg.com
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cdl.uta.edu/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm
22 Jul
22 Jul
9:04 p.m.
On Thu, 23 Jul 1998, PG Manney wrote:
According to my Que" UG & R PCs" the Vertex is a 71.0 meg hdd.
There's
only 4 of them listed, the smallest being mod. V130 at 25.8 megs. I used this
chart to recover 10 megs using Spinright for a 32 Miniscribe hdd that had been
low-l formatted at 20. The sheet says it has 1166 cyls. , 7 heads , 17 sectors
per track , and a Write Precomp of 128.
I have a customer (Yes, Virginia, I have two
customers) who has an Epson
QX-10 running CP/M.
His (external) hard disk is reporting bad sectors; he wishes to switch to an
ST-506/412 Vertex 185, which I think is 20 MB.
I find no data for the Vertex 185, but it should have at least as many heads
and cylinders as the disk replaced. That is, unless the CP/M HD format
program is more flexible than most.
I would like
to test the Vertex 185 under Spinrite (MS-DOS) and expand the
bad track table, if Spinrite discovers more problems.
I have questions --
Will the bad track information carry over under CP/M, and will its format
utility see the MS-DOS info? Otherwise, should we just make a list and enter
it?
I think not. Most CP/M HD format programs that I have run across do not
offer the facility to enter bad block data. After format, run a program
such as FINDBAD.COM, which will identigy bad blocks and mark them as used
in the USER 15 directory.
Is there a low-level format utility in CP/M? Is
it necessary, as under
MS-DOS?
It is all done in a single operation. No separate LL and HL formats.
The entire disk will be filled with sectors full of 0E5H's.
What is the QX-10 controller card going to think
of a different hard drive?
Probably, won't note it.
Will it try to run the new drive as a 10 MB?
As I said, unless it is a more flexible than most HD format program, it
will format the same number of heads and cylinders as the previous HD. Thanks,
Your welcome.
- don
> manney(a)lrbcg.com
>
24 Jul
24 Jul
11:56 a.m.
On Thu, 23 Jul 1998, Lawrence Walker wrote:
**** snip ****
Am I missing something here ? Where is the hdd info
stored ?
In the case of the Kaypro 10, it is defined in the EPROM. Others, I
suspect, store it in the BIOS.
If each machine was tied to one size , how are fdds
upgraded ? Would a driver
for BIOS normally come with each machine or hdd?
Rather than a driver, you would need to patch the BIOS.
I'm obviously a neophyte at CP/M and wrestling at
this time with a Dec RB
which is even more confusing cause it also runs MSDOS.
The Rainbow is a unique case because of its dual processors.
I also
have a QX-10 that
I will eventually be struggling with when I find an Epson monitor, a KayPro 2X
that I still haven't gotten up and running , not to mention the TRS80 m.ll .
I've the QX-10 CP/M Primer which is very basic and cutesy like some of the
Vic20 manuals. I have a Micro C.Books "CP/M and the Personal Computer" by Dwyer
& Critchfieldand , "The Programmers CP/M Handbook" from
Osbourne/McGraw-Hill ,
and the XEROX "CP/M 80 and CP/M 86" manual from DRI. What do you recommend.
I am familiar with only "The Programmers CP/M Handbook", but I would
guess that each will supplement areas that are weak in one or more of the
others.
- don
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cdl.uta.edu/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm
23 Jul
23 Jul
4:07 p.m.
On Thu, 23 Jul 1998, PG Manney wrote:
The Vertex 185 is also the Priam 185 I think... and it's about 85mb
unformatted -- but it had more than 8 heads and I seem to remember
most PC's ran it as a 67mb or so...
Bill
I have a customer (Yes, Virginia, I have two
customers) who has an Epson
QX-10 running CP/M.
His (external) hard disk is reporting bad sectors; he wishes to switch to an
ST-506/412 Vertex 185, which I think is 20 MB.
22 Jul
22 Jul
9:04 p.m.
On Thu, 23 Jul
1998, PG Manney wrote:
The Vertex 185 is also the Priam 185 I think... and it's about 85mb
unformatted -- but it had more than 8 heads and I seem to remember
most PC's ran it as a 67mb or so...
Bill
I have a customer (Yes, Virginia, I have two
customers) who has an Epson
QX-10 running CP/M.
His (external) hard disk is reporting bad sectors; he wishes to switch to an
ST-506/412 Vertex 185, which I think is 20 MB.
9496
days inactive
9497
days old
5 comments
4 participants
participants (4)
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donm＠cts.com -
lwalker＠mail.interlog.com -
manney＠lrbcg.com -
pechter＠pechter.dyn.ml.org