harris@ecsvax.uncecs.edu (Mark Harris) (02/05/89)
I've run into a slight problem with a disk copying program I wrote to
speed up the process of making multiple copies of a single disk. I use
BIOS interrupt 13h to copy all the sectors of a disk to a 360k file on
my hard disk, then I reverse the process, repeatedly copying the file
to formatted blank disks. I noticed that if I did a 'dir' on a blank disk,
then ran my copy program another 'dir' still showed the disk blank. If I
simply open then close the drive door and do a dir I see the correct files.
I assume that the old FAT and directory are still buffered when int 13 bypasses
DOS. Any recommendations on what I should do at the end of a disk copy to
'log in' the altered disk?
--
Mark Harris mail:harris@ecsvax(UUCP/BITNET)
Department of Mathematical Sciences
Appalachian State University
Boone, NC 28608 (704) 262-3050 office, 264-6906 homertregn@immd3.informatik.uni-erlangen.de (Robert Regn) (02/14/89)
From article <6349@ecsvax.uncecs.edu>, by harris@ecsvax.uncecs.edu (Mark Harris): - I've run into a slight problem with a disk copying program I wrote to - speed up the process of making multiple copies of a single disk. I use - BIOS interrupt 13h to copy all the sectors of a disk to a 360k file on - my hard disk, then I reverse the process, repeatedly copying the file - to formatted blank disks. I noticed that if I did a 'dir' on a blank disk, - then ran my copy program another 'dir' still showed the disk blank. If I - simply open then close the drive door and do a dir I see the correct files. - I assume that the old FAT and directory are still buffered when int 13 bypasses - DOS. Any recommendations on what I should do at the end of a disk copy to - 'log in' the altered disk? Why you don't use int 25h ? It works a level higher and you nedd not worry about sectors and heads. Robert Regn rtregn@faui32.uucp rtregn@immd3.informatik.uni-erlangen.de