Does anyone remember the max disk sixe for a VS3100 M76?
Gregg C Levine
I have here a VS 3100 M76. I don't believe the drive it came with has
an OS on it. However, it doesn't have a CDROM drive installed either.
Does anyone remember the maximum disk size for these machines? I'd
like to try installing the operating system onto a disk drive via
SIMH, with the emulator pointing to an actual disk drive, rather then
a file name, and then move the finished drive to the system. I've got
a collection of SCSI drives here, some sizes are way too large for the
VS 3100 M76, others seem to be the right size range.
-------------------
Gregg C Levine hansol...@worldnet.att.net
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Johnny Billquist
> Hello from Gregg C Levine
> I have here a VS 3100 M76. I don't believe the drive it came with has
> an OS on it. However, it doesn't have a CDROM drive installed either.
>
> Does anyone remember the maximum disk size for these machines? I'd
> like to try installing the operating system onto a disk drive via
> SIMH, with the emulator pointing to an actual disk drive, rather then
> a file name, and then move the finished drive to the system. I've got
> a collection of SCSI drives here, some sizes are way too large for the
> VS 3100 M76, others seem to be the right size range.
You'll probably not have any problems whatever drive you pick. It's just a
question (possibly) for the boot rom. But if you have a root partition
that is less than that capacity limit, you won't have any problems.
That is, the boot rom code, which uses a somewhat limited disk address
field, is only used to read in the initial boot loader, and possibly the
kernel. After that, you use the NetBSD SCSI driver, which don't have this
limitation.
So use any disk you want to. Limit the root partition to one gig, and
you'll be safe.
Johnny
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|| on a psychedelic trip
email: b...@update.uu.se || Reading murder books
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Antonio Carlini
> So use any disk you want to. Limit the root partition to one
> gig, and you'll be safe.
FWIW the actual limit is 1.073GB - just in case that
extra 73MB makes a difference :-)
Antonio
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---------------
Antonio Carlini arca...@iee.org
der Mouse
>> and you'll be safe.
> FWIW the actual limit is 1.073GB - just in case that extra 73MB makes
> a difference :-)
I believe this is true only if you use GB to mean disk-manufacturer
("metric") gigabytes instead of what I'm having trouble calling
anything but "real" (binary) gigabytes, and then it's not 1.073 but
1.073741824.
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Carl Lowenstein
> To: <port...@NetBSD.org>
> Subject: RE: Does anyone remember the max disk sixe for a VS3100 M76?
> Date: Fri, 6 May 2005 17:45:40 +0100
>
> Johnny Billquist wrote:
>
> > So use any disk you want to. Limit the root partition to one
> > gig, and you'll be safe.
>
> FWIW the actual limit is 1.073GB - just in case that
> extra 73MB makes a difference :-)
The actual limit is 2^30 bytes. That is, 1073741824 bytes.
Short-format SCSI command codes have an address limit of 2^21 data blocks.
carl
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