[Freemint-list] XHDOSLimits

[Adam Klobukowski]

2016-09-04 10:03 GMT+02:00 Vincent Rivière <vincent.riviere at freesbee.fr>:

> On 04/09/2016 at 06:09, Miro Kropáček wrote:
> > I remember some 128 GB limit for HD Driver but that can be something
> > else.
>
> A 160 GB IDE/SATA drive requires LBA48.
>
> LBA48 is a "new" method to address sectors on drives > 137 GB. This must be
> supported by both the hardware and the driver. I don't know what is the
> status on Atari machines.
>
> NB: For memories, when a hard disk manufacturer says a hard disk is 137 GB,
> it means 137,438,953,472 bytes. So the actual capacity is 128 GB, with 1 KB
> = 1024 bytes.
>

Hddriver 9.x supports LBA48, but XHDI allows up to 32bit sector address,
and we are limited to 512byte sectors, that makes a theoretical harddrive
size limit of 2TB.

AdamK


-- 
Semper Fidelis

Adam Klobukowski
adamklobukowski at gmail.com
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