[comp.sys.ibm.pc.hardware] Problems with a Ericsson HD

ncpg@ehviea.ine.philips.nl (ncpg) (02/20/91)

Hello,
I am having troubles with the above mentioned harddisk. All worked fine under DOS version 3.00, but when installing 3.30 (or higher) things started to disfunction.
The problem is the fact that the disk only has 2 heads, and so it has 34 
sectors per cylinder (it is 17 sector/track). But when issuing a diskwrite
with DOS 3.30 it tries to write 31 sectors in one single interrupt 13 call, starting from sector number 6 in that specific cylinder.(this is only an exmaple)
So, in one diskwrite it should access more cylinders, which is forbidden.
DOS 3.00 behaved better. (for some strange reason, Xcopy seems to work fine, even under dos 3.30, while the ordinary copy and type commands fail)
Extra info: Ericsson provided me with a special fdisk.exe, because the disk was a very "strange" one (?).

Can anyone help me out with how to resolve this problem?

John Kesseler.