Re: DOS partitioning


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Posted by JMDickson on 27, 2000 at 7:36 PM:

In Reply to: DOS partitioning posted by MameBox on 27, 2000 at 11:34 AM:

Your actual problem is DOS 6.22's ability to address the physical disk. DOS functions pass head/sector/cylinder info in fixed format. To remain backwards compatable this format has not changed, even when our drive technology has. We've just used hacks like 'LBA' to translate, but the format maxes out at 8 gigs.
The rule is DOS (and NT 3.5!) can only address the first 8 gigs of a disk PERIOD. You can 'see' any partitions under the 8 gig line as long as they are FAT16.

: I am in the finishing stage of building my cabinet from scratch. As soon as it is finished I will put up a Web page with some pictures.
: To put inside the cabinet I have purchased a new computer (very much the same parts as Saint). My 20 GB HD from IBM is partitioned as follows:

: - Primary partition that holds OS2 bootmanager
: - Primary partition that holds DOS 6.22 (2GB)
: - Primary partition that holds Win95 (2GB)
: - Extended partition for the rest of the HD
: - The extended partition is divided into several 2GB logical drives

: When selecting DOS from the bootmanager, the primary partition that holds WIN95 becomes invisible and vice versa.

: The problem is that DOS only recognises the C-drive (DOS), D-drive (logical drive) and E-drive (logical drive). The rest of the logical drives are not accessible.
: I know of the limit of 2GB pr. partition and I am below that. The partitions are also formatted as FAT16 and in my autoexec.bat I have the LASTDRIVE=Z.

: Are there also a limit in size for the Extended partition???

Nope

: How have you partitioned your HD?

Drive 1
5M: Linux Boot
8G: FAT32
rest: various Linux partitions

Drive 2
2G: DOS

: TIA




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