Media access check – HP C737990900 User Manual

Page 35

Commands—Introduction 35

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■

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.

Media Access Check

This checks if the drive is able to perform media access commands. If the

media is inaccessible then

CHECK CONDITION

status is reported with a sense

key of

NOT READY

. The additional sense will be set to one of the codes

associated with the

NOT READY

key.