On Sunday 08 October 2006 12:08, Pianoman wrote: > Hello, I'd like to ask if someone has experiences with low > level disk operations in windows with FPC. > The program should be able to copy entire diskete to one single image > file and for example extract a single file from that image or view > its contents.
http://www.winmag.com/library/1995/0695/06howtoc.htm: -- 8< -- snip -- To open a disk for direct access, you use the Win32 CreateFile function with a special format to specify the name of the disk (a floppy or a partition on a hard disk): "\\\\.\\a: " to open the a: floppy and "\\\. \\c: " to open the c: partition on a hard disk. On hard disks, you can even get direct access at the physical device level, bypassing the partition structure. This is done with the special name "\\\\.\\PhysicalDriveN," where N is the number of the hard disk, starting with 0. If you have only one physical hard disk, it's PhysicalDrive0, no matter how many partitions you have. -- 8< -- snip -- So creating a floppy image seems fairly easy (provided you have the rights to access the disk in that way at all), but extracting a file from a disk image may be harder because that would require knowledge of the file system in question unless Windows has some sort of "mount" feature for such image files. HTH, Vinzent. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
