Nicholas Clark writes:
> In the last mail Allen Craig said:
> > just wondering if I can put in say a 6 gig drive and have 4 gig limit
> > available to RO and 2 gig available to linux for example.
> >
> > I know you can put bigger drives on ide expansions and partition them up
> > (i have this) but it does not help for armlinux (needs to be 'adfs'
> > drive).
>
> so the internal interface has no problem with obscenely large discs.
> As to how much ADFS/FileCore can cope with, dunno. You can only have one logical
> ADFS partition per physical disc, so that won't help you.
Well, the internal IDE interface consists of nothing more than some decode
logic (to detect when accesses are meant for the hard drive) and some buffers
if I remember correctly. Therefore, I don't see why you can't attach an
extremely large IDE drive to the internal interface and use it, so long as the
OS you are using can cope.
However, note that you have to be really careful about how you partition the
drive. If ADFS can only access N GB of the disk, and you're booting a kernel
from within the root filesystem, you must make sure that the whole of the root
filesystem is also within this limit (just like on a PC with an old BIOS you
need to make sure that the whole of the root filesystem is below the 512MB
limit).
However, I'm not saying that any hard drive will work...
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