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AH = 1Fh AL = subfunction 00h allow media removal 01h prevent media removal (lock door) DL = drive ID (bit 7 set for hard disks)
Return:
CF clear if successful AH = 00h CF set on error AH = error code 00h successful 01h invalid function request 80h timeout DDh media change requested
See Also: AH=12h"SyQuest" - AH=13h"SyQuest" - AH=59h"SyQuest"
Category: Disk I/O Enhancements - Int 13h - S
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