DOS ain't dead - Accessing SATA devices in DOS

Accessing SATA devices in DOS | FreeDOS and 2 TiB size (DOSX)

posted by DOS386, 10.01.2008, 00:47

> IMO it should support anything up to 2^32 sectors (2TB)

should is good ... but was this tested carefully ?

> why do you think, that FreeDOS doesn't like huge drives ?

From my tests. On a 200 GiB (sorry, I don't posses the PC, it's far away now, and the tests date cca 1 year back).

IIRC:

C: FAT32 2 GiB BOOT.INI FreeDOS EDR-DOS
D: NTSC 120 GiB XP
E: FAT32 80 GiB "data" (as D: for DOS)

I could well boot both FreeDOS and EDR-DOS and use C: , "D:" with XP was invisible for DOS (both, correct), and FAT32 E:/D: wasn't accessible with FreeDOS (strange errors, failure to find sector / follow cluster chain ?), but worked well with EDR-DOS.

This might be related to minor bug with whining about "suspicious" partitions at startup - installed FreeDOS several times (1 or 2 HD's of cca 3 ... 16 GiB, several FAT 16 and FAT32 partitions) , and pretty always one partition was "bad" - but no further problems, read and write OK.

There is also the possible writing-huge-file-bug pending, sorry no new results about it.

Can anyone else test ? Laaca ? :hungry: What is the biggest HD verified to work ? The biggest partition size ? The highest partition start (was cca 120 GiB then, and this might be the crucial problem) ?

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Complete thread:

Accessing SATA devices in DOS - Japheth, 14.08.2007, 11:58 (DOSX)
- Accessing SATA devices in DOS - avoskov, 14.08.2007, 19:06
  - Accessing SATA devices in DOS - Japheth, 14.08.2007, 22:18
    - Accessing SATA devices in DOS - DOS386, 16.08.2007, 09:56
      - Accessing SATA devices in DOS - tom, 09.01.2008, 20:38
        Accessing SATA devices in DOS - sol, 09.01.2008, 22:30
        Accessing SATA devices in DOS | FreeDOS and 2 TiB size - DOS386, 10.01.2008, 00:47
        Accessing SATA devices in DOS | FreeDOS and 2 TiB size - tom, 10.01.2008, 20:45
        Accessing SATA devices in DOS | FreeDOS and 2 TiB size - Steve, 11.01.2008, 00:19