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lba to chs

Posted: Wed Jan 04, 2012 5:11 pm
by VolTeK
Where can i find information on all floppy disks?

int 13h says i can only get 1 - 63 value for sectors, but fat12 says its 18 sectors per track (unless ive mis read) is that 1 - 18 per track or 0 - 17 (18 sectors) i know it says 1 - 63 but id just like to make sure.

Re: lba to chs

Posted: Wed Jan 04, 2012 5:19 pm
by turdus
63 is the maximum number of sectors to read with one BIOS call. If you want to read a full track a time, use 18. What's the problem?

Re: lba to chs

Posted: Thu Jan 05, 2012 12:01 pm
by azblue
Start at 1, 1-18

Re: lba to chs

Posted: Tue Jan 10, 2012 4:03 am
by Combuster
There need not be a floppy disk at the receiving end when you call int 13h. An eltorito cd or usb key works too.

That said, reading across floppy tracks is asking for portability issues.