8.4 GB per HDD barrier question...

8.4 GB per HDD barrier question...


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Posted by Rob F on June 30, 2000 at 01:10:13:

Hi.
I have a system w/ 2 Maxtor "DiamondMax" HDD's, both >10 GB in size. I have 'em configured as primary master & slave (only my CD burner is on the secondary IDE channel). I'm not using drive overlays of any kind on these disks, and they are addressed in "LBA mode", and are running at DMA-2 setting. My BIOS is correctly "seeing" the total capacity of each of my HDD's, because on bootup one of the first messages displayed is the (correct) info about each HDD.

Anyway, many of my favorite games are older DOS-based ones (and many of these run best under "pure" DOS), and so I have a multiboot system that includes DOS as one of its OS's. Under "old" DOS (PC-DOS 6.3 and MS-DOS 6.22), I know there is an 8.4 GB/per HDD barrier beyond which DOS cannot "see"
any further HDD space. However, I have read in a couple of places that if your PC's BIOS can "see" beyond the 8.4 GB barrier, your DOS ought to be able to do so also...

I'm wondering if this is true...therefore I ask:
1) What's the deal on this?...Was this info about BIOS "vision" enabling DOS's "vision" accurate, or not?...

2) If so, then why can't DOS "see" the full capacity in my case, since the system's BIOS can?...

3) If not, then at least I understand why DOS can't see it. However, that then leads to another question:
>>Are there any tricks/tips, workarounds/patches, or software utilities that'll help my DOS to see the full capacities of my large HDD's?... If so, where can I get 'em?!...
Thanx.

Sincerely,
-Rob F


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