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Posted by Ohso on 27, 2000 at 5:39 PM:

In Reply to: Re: DOS partitioning posted by Ohso on 27, 2000 at 5:31 PM:

Everyone is correct in saying that it is MUCH simpler to avoid all this drive partitioning and simply switch to FAT32 if you have access to WIN95b or WIN98. Even if you don't, you can still have 95 or even 98 boot direct to a command prompt without loading windows, so the DOS 6.22 is completely unnecessary. Effectively you can have your cake and eat it too.


: Actually FAT16 can support up to 4GB, but only under NT because it allows 64k cluster sizes.
: DOS 6.22 however limits FAT16 to 32k clusters and thus 2GB so it is actually more of an OS limit than a file system one.
: However on an extended partition each logical drive can be up to 2GB under dos 6.22, the limit is per drive letter, not per partition.

: So the picture I get of this drive is:

: Partition 1) OS/2 BM
: Partition 2) DOS 6.22 Primary (FAT16)
: Partition 3) Win95 Primary (FAT16)
: Partition 4) Extended with several logical drives (each with FAT16)

: So the drive is maxed with 4 partitions. Now you say DOS 6.22 can only see 2 of the logical drives and although you didn't say it I am assuming win95 can see them all (correct me if I'm wrong). I am unaware of this kind of limit existing in DOS. It is more likely that DOS is simply unable to get the correct drive settings from your bios. What happens in DOS when you run FDISK and look at the partition sizes? What does the extended show up as?

:
: : FAT16 is limited to 2Gig period.

: : FAT32 you can go higher, have a 20 gig drive with 15 gig extended with 3 5 gig drives inside it. But FAT32 is only available from WIN 9X, might be utilities ya can run to see fat32 drives. I know one existed for win nt.

:
: :
: : : 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???

: : : How have you partitioned your HD?

: : : TIA




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