From: z80eu@arcor.de   
      
   On 21.04.2012 15:39, Guillaume Tello wrote:   
   > Le 21/04/2012 13:37, Paolo a écrit :   
   >> Please, what is the structure of a .ST file emulating an Atari ST   
   >> floppy disk?   
   >> It gets 738.260 B versus 726.016 on the FD.   
   >> Thanks   
   >> Paul   
   >   
   > A standard floopy has:   
   > 80 tracks with 9 sectors of 512 bytes on each side, so it is a total of:   
   > 80*9*2*512 = 737 280 bytes.   
   >   
   > Some sectors are reserved for boot + FAT, so you only get 726 016 bytes   
   > available for storage.   
   >   
   > 738260 - 737280 = 980 bytes added.   
   > Well, I can't say more in this organisation of those 980 bytes.   
   >   
      
   It's similar to MS-DOS formatted floppy disks.   
   You have a boot sector (512 Bytes), which is always not usable for data.   
   And you have some File Allocation Table sectors, and last but not least   
   a few sectors for directory entries.   
   How many sectors are used for FAT and Directory Entries is set by some   
   bytes/numbers in the mentioned boot sector.   
      
   So this is no rocket science.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)