When I leave my MacBook Pro 13" level for a minute or two (sometimes I only need to keep it level for a few seconds), and then pick it up and turn it on it's horizontal axis, I hear a single click, coming from either the hard drive or the Super Drive.
Is the click I am hearing some sort of locking mechanism in the hard drive? Or in the Super Drive?.. And therefore nothing to worry about. Or is either my Super Drive or hard drive faulty?
Here's some System Profiler info about the hardware:
MATSHITADVD-R UJ-898
Model: MATSHITADVD-R UJ-898
Revision: HC10
Serial Number: UK30 1602WH
Native Command Queuing: No
Detachable Drive: No
Power Off: Yes
Async Notification: No
Hitachi HTS545025B9SA02
Capacity: 250,06 GB (250.059.350.016 bytes)
Model: Hitachi HTS545025B9SA02
Revision: PB2AC60W
Serial Number: 100326PBL2003SHDB87V
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Rotational Rate: 5400
Medium Type: Rotational
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified