Re: 8.4 GB per HDD barrier question...

Re: 8.4 GB per HDD barrier question...


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Posted by bored computer geek on July 03, 2000 at 23:37:46:

In Reply to: 8.4 GB per HDD barrier question... posted by Rob F on June 30, 2000 at 01:10:13:

Actually, MS-DOS 6.22 should have a drive capacity barrier of 2.1 gigs, just like the original Windows 95 retail version. IBM has fiddled with PC-DOS >6.3, so maybe that maxes out at 8.4, but I really don't know, and I kinda doubt it. It has everything to to with cluster sizes using DOS's FAT16 partitions, which both DOS and early Win95 uses. Later versions of Win95 and Win98 uses FAT32 partitions which max out at something like 128 gigs, but DOS can't use FAT32. So in a nutshell:
-Pure MS-DOS can only be installed on a FAT16 partition, which should have a size limit of 2.1 gigs.
-Just because your newer computer's BIOS can recognize drives larger than 8.4 gigs, it doesn't mean the operating system running on your PC can.
-Drive overlay software is only a band-aid for getting a large drive to work on a PC with a hardware capacity limit like 2.1 gigs or 8.4 gigs. If your computer recognizes your 10 gig drives, you don't have this problem, so overlay software won't help you with this.
-There's no way to hack MS-DOS so it can be installed on a 10 gig drive using one partition.
I may be wrong with my facts, but it's been years since I've played with DOS/Win31. I'm pretty sure I'm right, though.


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