[syslinux] syslinux-3.36 Physical Floppy Disk Access Problem

[Geert Stappers]

Op 13-06-2007 om 12:00 schreef Desmond Boyd:
> hpa:
 <snip/>
> >The most likely failure seems to be between 3.32-pre3 and -pre4:
> >
> >     memdisk: Constrain input drive numbers both by equipment byte and
> >     INT 13h
> >
> >     Apparently on some BIOSes, INT 13h return a bogus number of floppy
> >     drives when the real value is zero (probably because the code
> >     doesn't check the validity bit in the equipment byte.)  Do it
> >     ourselves if we need to.
> >
> >There should be a line when MEMDISK boots up saying something about "INT
> >13 08", what is that printout?
> >
> >	-hpa
> >
> 
> Hi,
> 
> Version 3.32-pre3 Physical Disk Drive B: OK with Virtual Disk Drive as A:
> Version 3.32-pre4 Physical Disk Drive B: Not Present only Virtual Disks A: 
> and B:
> 
> INT 13 08 Success, Count = 1, BPT = f000:a137
> old int13=f00023cb, int15=f000f859
> new int13= 9ec00008, int15=9ec00375
> 
> All memory addresses listed on the memdisk info page @ bootup for pre3/pre4 
> are identical but pre4 does not see the physical floppy disk.
> 
> If you need the exact screen information from both versions I can write each 
> one down unless there is a way to save the boot information with a switch to 
> the virtual fdd then I can upload the info to a networkshare.

For your information:
It was this posting that previous didn't get any follow-up.
The Message-ID is <BAY125-F248E32928DB0FE52C4048180180 at phx.gbl>


I hope this helps.

Cheers
Geert Stappers