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Media Access Check
The sense key specific bit is set and the sense key specific bytes will be a
field pointer.
The command/data bit is set, indicating that the illegal parameter was in
the command.
Note
Command descriptor blocks are scanned from left (bit 7) to right
(bit 0), and down (from byte 0 to byte n). The field pointer will
be set to point to the first bit of the first illegal field encountered
using this scanning route. In some cases, where multiple fixed
fields are contiguous, the field pointer might be set to point to the
first bit of the first fixed field in the group of fixed fields, whereas
the actual illegality may lie in a later bit.
This checks if the drive is able to perform media access commands. If the
media is inaccessible then
key of
. The additional sense will be set to one of the codes
NOT READY
associated with the
NOT READY
status is reported with a sense
CHECK CONDITION
key.
Commands—Introduction
35
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