Bitfields for DRFAT32 access flags:
Bit(s) Description )
7 using LBA addressing instead of CHS
6 using INT 13h extensions (see also INT 13/AH=48h)
5 multi-sector access allowed
4 force media change indication on removable drives
3 force verify after every write (/W)
2 more than 1024 cylinders, less than 64 heads (/A)
1 client-side asynchronous buffering allowed (/B), normally =0
0 read-only access (/R)
SeeAlso: #04109,#04112