Hi, gurus!

As discussed in earlier thread http://forum.hddguru.com/mhdd-can-access-usb-connected-sectored-disks-t21099.html I have acquired an USB disk appliance which (annoyingly) presents 4-k sectors to the host computer.

After some debugging I succeeded in accessing the device sectors from MS-DOS, using the following software & methods:
- USBASPI.SYS (Panasonic) version taken from this excellent hddguru.com site IIRW
- a home hacked DI1000DD.SYS . The original driver had hard-coded 512-byte sector size, I patched it to assume 4-kibyte sectors instead :=)

With this very simple hack, I'm able to read/write sectors (using int 13h) !

Should somebody just ask, I'll give details for patching one's copy of DI1000DD

Up to this point this is of relatively little interest, as DOS itself isn't patched to expect HDDs with 4k sectors.

Now time for my actual questions :

- Does the honorable company know of free patches for MS-DOS to work with 4k sectorised hard disks ?

- Does FREEDOS, or some nother free DOS clone, support such devices out of the box?


Thanks in advance

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Czerno