>What is the largest HD you can have in a B&W running System 9.x
>without installing a PCI card?

Two answers, both correct:

1) 120 GB, using the on-motherboard UATA controller, and

2) as large as your can find, 250 GB, at least, using an ACARD SCSI-IDE 
"bridge" on the drive, and a supported SCSI card, ATTO, for example; with 
the implicit assumption that the "PCI card" mentioned in the question was 
a UATA card and not a SCSI card.

(1) is a consequence of lack of 48-bit LBA support in the motherboard.

(2) is a consequence of the 48-bit LBA support which was added to the 
ACARD "bridge" product.

Normally, UATA/133 support and 48-bit LBA support go hand-in-hand.

And, they normally do, in UATA PCI cards.

However, in the "bridge" product, 48-bit LBA was added independently of 
UATA/133.

In fact, although the "bridge" supports UATA/33, UATA/66, UATA/100 and 
UATA/133 drives, it also has a 40 MB/sec maximum internal transfer rate.

Other versions of the "bridge" product are available, the LVD/SE ones in 
particular, which have a higher internal transfer rate.

There are LVD/SE, UW-SCSI and F-SCSI versions of the "bridge" product, 
supporting 68-pin LVD/SE drives, 68-pin UW-SCSI drives, and 50-pin F-SCSI 
drives, respectively.

So, even a Beige or a 9600 or a 8600 or a 7300 (or less), or even a B&W 
(with a SCSI card) can be configured to support any capacity drive.



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