Article View: comp.sys.atari.st
Article #3486floppy disk sizes, how to calculate them
From: Richard E. Covert
Date: Tue, 29 Aug 1989 15:38
Date: Tue, 29 Aug 1989 15:38
21 lines
1173 bytes
1173 bytes
... I am writing a backup program and I need to ask the user for the size of his floppy. There are many ways of doing this. One method is for the user to enter the decimal number of bytes per floppy (from a table shown on the screen). another way is to ask the user to enter the number of tracks per disk, number of sectors per track, and number of sides per disk. I perfer the latter. But, how do I calculate the amount of usable space based on the number of sectors, tracks, and sides?? Some of the disk is used by the directory, and I heard that there are some unused sectors at the end. So, what is a good formula for determining the size of a floppy?? I am writing this program in Mark Williams C, so I would perfer C code, but a simple formula is enough. tia richard (gtephx!covertr) covert
Technical Details
Message-ID:
<4552164d.14a1f@force.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ncar!asuvax!hrc!force!covertrShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ncar!asuvax!hrc!force!covertr From: covertr@force.UUCP (Richard E. Covert) Newsgroups: comp.sys.atari.st Subject: floppy disk sizes, how to calculate them Keywords: atari st, c Message-ID: <4552164d.14a1f@force.UUCP> Date: 29 Aug 89 15:38:41 GMT Organization: gte Lines: 21