[N8VEM: 16238] Formatting Hard Disks on Disk IO v3

[opticpow]

Hi All,

Since getting the sbc working the other day, I've put together the
backplane and disk io v3.

I believe the board is working fine, I can format a 1.44 floppy sysgen it
and boot from it. For the ide disks, I've been about to select the drive
with e: and sysgen both an ide zip disk & and 80gb hd and both boot. what I
can't work out is how to format them with multifmt. when running the
program I only get the choice of logical units 0 & 1, which I'm thinking
are the RAM & ROM??

Am I missing something??

Thanks,

Wayne.

[Douglas Goodall]

Post by opticpow
Hi All,
Since getting the sbc working the other day, I've put together the backplane and disk io v3.
I believe the board is working fine, I can format a 1.44 floppy sysgen it and boot from it. For the ide disks, I've been about to select the drive with e: and sysgen both an ide zip disk & and 80gb hd and both boot. what I can't work out is how to format them with multifmt. when running the program I only get the choice of logical units 0 & 1, which I'm thinking are the RAM & ROM??
Am I missing something??

There is a feature in ROmWBW called "Logical Units" which is how we make use
of the entire Compact Flash or Secure Digital chip. Each logical unit is 17MB in size
so if you have a 64MB Compact Flash, it will support 7 logical units numbered 0 through 6.

By default the first HD drive letter is mapped to the first logical unit, and the second drive
letter to the second logical unit. The BIOS determines how many logical units there can be
from the configuration file that is assembled into the BIOS.

Before you can safely use the Compact Flash chip for storage, you should prepare it,
and the easiest waxy to do that is to use the multifmt program.

The multifmt program tries to do what you want, but it also tries to protect you. For instance
before it will reformat the first logical unit, it asks you for verification. If knows the assembled
in size of tyne storage and will suggest starting (0) and ending values (number of lu-1).

The map command is useful both to examine the current mapping and to change the
mapping. By example, lets say A: was your first HD, and B: your second, You could change the
B: drive to use the third logical unit instead of the second.

MAP B: 2

and to change it back you could do

MAP B: 1

In this way, you can use the entire HD space, without the overhead in memory of normal
drive letter support.

After you boot up, change to the drive letter of the HD and run multifmt off the romdrive.

It should do the right thing.

Douglas

Post by opticpow
Thanks,
Wayne.
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---
Douglas Goodall
doug-***@public.gmane.org
http://goodall.us.com
WQRLl515

[Douglas Goodall]

Oops, I meant each partition is 9MB, not 17MB.

Douglas

Post by opticpow
Hi All,
Since getting the sbc working the other day, I've put together the backplane and disk io v3.
I believe the board is working fine, I can format a 1.44 floppy sysgen it and boot from it. For the ide disks, I've been about to select the drive with e: and sysgen both an ide zip disk & and 80gb hd and both boot. what I can't work out is how to format them with multifmt. when running the program I only get the choice of logical units 0 & 1, which I'm thinking are the RAM & ROM??
Am I missing something??
Thanks,
Wayne.
--
You received this message because you are subscribed to the Google Groups "N8VEM" group.
Visit this group at http://groups.google.com/group/n8vem.
For more options, visit https://groups.google.com/groups/opt_out.

---
Douglas Goodall
doug-***@public.gmane.org
http://goodall.us.com
WQRLl515

[opticpow]

Thanks Douglas, Switching to the drive before running multifmt is what I
was missing.

Cheers,

Wayne.

Post by Douglas Goodall
Oops, I meant each partition is 9MB, not 17MB.
Douglas
Hi All,
Since getting the sbc working the other day, I've put together the
backplane and disk io v3.
I believe the board is working fine, I can format a 1.44 floppy sysgen it
and boot from it. For the ide disks, I've been about to select the drive
with e: and sysgen both an ide zip disk & and 80gb hd and both boot. what I
can't work out is how to format them with multifmt. when running the
program I only get the choice of logical units 0 & 1, which I'm thinking
are the RAM & ROM??
Am I missing something??
Thanks,
Wayne.
--
You received this message because you are subscribed to the Google Groups "N8VEM" group.
To unsubscribe from this group and stop receiving emails from it, send an
Visit this group at http://groups.google.com/group/n8vem.
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---
Douglas Goodall
http://goodall.us.com
WQRLl515