For anyone who wrote MS-DOS device drivers: The Device Driver Header (DDH) ddh_attribute field specifies device driver characteristics. One of them is IBM format vs non-IBM format block device. What is the functional difference?
-Thom
Sorry no help here,
Just adding a link to the pdf from which you posted an excerpt
http://www.bitsavers.org/pdf/microsoft/msdos_ … s_in_C_1990.pdf
though maybe if the link is found to be not suitable due to some rights issues, the title
Adams - Writing DOS Device Drivers in C (1990)
might be more suitable.
Interesting though.
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Block device = storage.
LBA =logical block addressing instead of cylinders heads sectors. Ask for the block and the hdd figures out how to fetch it.
IBM most likely =IBM initialised/formatted
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