[comp.sys.atari.st] Hard Drive and PC-DITTO II

CHIASSA@UDEM.BITNET (Alyre CHIASSON) (05/26/89)

 I just bought a MegaFile 30 for my 1040ST and decided to try to
 get PC-DITTO II to recognize the hard drive. Everthing seems to
 come up fine until I do a DIR command on partion C: which gives me
 the error message "capacity overflow during division,"(DOS 3.2).
 I have no idea what this means or how to correct it. I am
 booting the system from floppy with only the PC-DITTO program in
 the autofolder and an autotime.prg to read the clock that I have in
 the cartridge port. I have the config.sys file set up as suggested in
 the manual and have reproduced it below.

 device=pc_dhd.sys
 buffers=16
 device=driver.sys /D:0/T:80
 device=driver.sys /D:1/T:40 (for my 5.25 drive)


 When the system comes up it does says 3 partitions which is
 correct I have my drive divided into 3 of 10 meg each. I also see
 the message that pc_dhd.sys has been installed. My drive was
 formatted with the program that came on the disk with my hard
 drive. From the PC-DITTO manual I understand that I do not have to
 reformat it under DOS.

 Can someone tell me what I am doing wrong or the source of the
 problem. Many thanks.

hcj@lzaz.ATT.COM (HC Johnson) (05/26/89)

In article <ID6433.D890526.T110745.CHIASSA@UDEM>, CHIASSA@UDEM.BITNET (Alyre CHIASSON) writes:
> 
>   Everthing seems to
>  come up fine until I do a DIR command on partion C: which gives me
>  the error message "capacity overflow during division,"(DOS 3.2).
> 
>  Can someone tell me what I am doing wrong or the source of the
>  problem. Many thanks.

The problem is that ms/dos wants a "correct" block 0.  The ATARI version
has sum wrong/undefined values the kill ms/dos.  This is the same old
problem of reading tos floppies on ibm pc's. 

What to do.  Ah yes, what to do.
What I did was write a program to fix the block 0, and supply what ms/dos
wants.  This was motiviated because if i used ms/dos format it insisted
on setting up the disk with 8 sector clusters, instead of 2, as ATARI
demands.   If you can lick this problem, use format under ms/dos.  If you
are really frustrated, cuss the Tramiels, and send me mail, I mail you
my fixup program.

Howard C. Johnson
ATT Bell Labs
att!lzaz!hcj
hcj@lzaz.att.com