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Is there any ready code for read and write from a floppy in protected mode (not real mode with int 13h)?
for example:
char *read_floppy(int cylinder, int head, int sector);

i hope anybody can help my.

Take a look at the wiki first: http://wiki.osdev.org/Floppy_Disk_Controller

Following on from the previous post, there's also a driver on this page. For reference, there's also a tutorial at the bottom of the FDC wiki page