Disk access using the BIOS (INT 13h): Difference between revisions
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Charlemagne (talk | contribs) Added note to make it more obvious that the offset must precede the segment in the disk address packet |
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Reading or writing an ATA hard disk in Real Mode with CHS addressing is <i>precisely</i> the same as doing the same operation on a floppy drive. Also remember that there are severe addressing limitations with CHS addressing. Typically only the first 8GB of the media can be accessed, at most. |
Reading or writing an ATA hard disk in Real Mode with CHS addressing is <i>precisely</i> the same as doing the same operation on a floppy drive. Also remember that there are severe addressing limitations with CHS addressing. Typically only the first 8GB of the media can be accessed, at most. |
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And when you read from USB (as floppy), 1440 Kb is the most. |
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===Converting LBA to CHS=== |
===Converting LBA to CHS=== |
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