From: Paul Guyot (pguyot_at_kallisys.net)
Date: Sun Mar 16 2003 - 14:42:09 PST
Il me semble que le 13/3/03 à 22:38 -0500, Nancy Haitz nous racontait:
>I have two Toshiba PMCIA Card Hard Drives that I currently use with a
>laptop, a 2GB and a 5GB. I have downloaded the ATA Support driver, but
>not had a chance register it or to try it. I guess I am going to have
>to just jump in and try it, but I have a couple of nagging questions.
I'd be glad to know if the cards are recognized and if you can partition them.
>#1 - How does one partition a big drive into 256MB partitions on the
>Newton?
I read here that the limit for stores is 256 MB. I think rather that
someone has a store which is around 256 MB. But no one knows the
actual limit. Actually I think there is no limit at all except those
from the system of stores. Each object has an ID coded on 32 bits.
Let's say that the system somewhere uses NewtonScript integers to
code IDs, you have 30 bits. Let's suppose that it doesn't like the
sign bits, and you have only 29 bits (I take the worst case as you
can see).
So you'll have 29 bits for the Object ID. ATA Support currently
splits the IDs in the sector ID and the ID within the sector. So you
have at least 24 bits for the sector. Consequently, the maximum size
for a store is probably at least 2^24 sectors aka 2^23 KB aka 8 GB.
>#2 - Since the Newton only technically recognizes two cards (2 slots)
>do I waste everything over the 512 MB size (Two 256MB partitions)? Or
>can I do lots of partitions on one card.
For the moment the partitionning options are quite limited. Improving
this is on my to-do list (just after sleeping enough per night,
though).
Paul
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