⇐ ⇐ COMPEL Mac OS
You read that right.
Quick link to the fix before I get to my usual rambling: hdapm. Install it and it will automatically set itself to auto-start on each boot and disable the auto park feature for all your drives.
Under Linux you can also use the hdparm command. Please note that you still need to fix your Mac OS X system with hdapm though as it will by default reset the power management on each boot!!
hdparm -B 255 [device]
or, if that throws an error
hdparm -B 254 [device]
device is usually /dev/sda.
Car Parking - Test Drive and Parking Simulator 1.2.1 for Mac can be downloaded from our website for free. The application lies within Games, more precisely Simulation. This free Mac application is an intellectual property of Modern Alchemists OG. This Mac download was scanned by our built-in antivirus and was rated as virus free. Alternatively, you can use the computer’s original disks or Apple's Internet Recovery system to install an earlier OS on the new drive and then upgrade it. In any case, the new drive will need to be formatted as Mac OS Extended (Journaled), but this can be done from an earlier OS. Once the files are on your hard drive, use the “Convert to MP3” instructions below to convert them to MP3. How to burn an MP3 CD on Mac. You can burn music on to CD or DVD to listen to in your car, on your stereo, on your portable music player or to play at a wedding reception in a number of different formats.
My usual rambling as to the background on this problem follows…. 🙂
Inside each of your modern hard disk drives, there is a head “lifter” ramp that the heads are parked on when the disks are not spinning. On older drives, they parked on the media, but times were different back then… the bit densities were lower, the heads floated on a thicker cushion of air, and more importantly, there was room for a layer of lubricant material to be baked onto the disks, kind of like the nonstick coating on cookware. This prevented a condition known as ‘stiction’ which causes the heads to stick to a disc once they settle down. On a modern drive, if you get the heads onto the platter somehow with it spun down, they will stick instantly and tenaciously. The drive usually has firmware routines that induce vibration and make all sorts of silly noises to shake them loose if it happens…
Anyway, the lifter ramp is not a bad idea in itself. Mobile hard drives used it for years to keep the heads safely locked away and prevent scratching / head “crashes” when the drive experiences shock and vibe in handling while powered off. Later drives would also retract the heads if they detected vibration nearing limits using a small accelerometer on the drive. Another variant also used the accelerometer to detect if the system was entering a free fall and would park the heads before impact.
Unfortunately, some goofbag, probably at Western Digital, did some testing and figured out that a drive left spinning with the heads unloaded used less power due to reduced aerodynamic drag but was still reasonably fast to return to service on user interaction. They based the Caviar Green series drives on this “feature” and it seemed okay….
Until the hundreds of thousands of load/unload cycles destroyed the drives in very very short order. OOPSIE NOODLES!!
Many other hard drives also support this same method of operation but do not enable it by default, under the Advanced Power Management feature set. The Western Decrepit drives enforce it by default unless you hit them with the wdidle utility and disable it.
Welp, guess what Apple decided to enable, by default, to be all “helpful”?
Here are SMART readouts from a potpourri of Mac systems and drives stewing in my pot.
Note that many hard drives are specified for 300,000 lifetime load/unload cycles. Under aggressive power management settings in average use, the drive may reach this in only a couple of months!!
When the load mechanism wears out, the drive usually exhibits a rapidly increasing amount of read errors. You can usually get your data back, but no guarantees here – I did see one just show up stone dead suddenly when the ramps wore through and the heads BROKE RIGHT OFF.
Where it gets worrisome and silly: the latter set of SMART results are from a Mac Mini *SERVER*, running Mac OS X *SERVER*. Why, Apple? Why did you feel the need to make a SERVER OS aggressively try to save power at the expense of turning the whole thing prematurely into e-waste? WAS THIS REALLY AN IMPROVEMENT?!
update: this little freakshow. OVER ONE MILLION. SUUUUUPER JAAAACKPOT!!! YOU RULE THE UNIVERSE! TROLL, DAMSEL, PEASANT, CATAPULT, JOUST MULTIBALL MADNESS! THE STORM IS COMING, RETURN TO YOUR HOME! DO NOT PANIC! DOHO!!
SMART Error Log Version: 1
No Errors Logged
Automatically back up all your files with Time Machine, which is built in to your Mac, or choose another backup method.
Create a backupYou can also use iCloud and iCloud Drive to store files, such as your photos, documents, and music.
Set up iCloud and iCloud DriveWhen you have a backup, you can use it to restore your files at any time, including after the original files are deleted from your Mac.
Restore from a backupMaking a backup is an important part of preparing your Mac for service, especially because some types of repair might require erasing or replacing your hard drive.
Get your Mac ready for serviceTo see the size of a specific file or folder, click it once and then press Command-I. To see storage information about your Mac, click the Apple menu in the top-left of your screen. Choose About This Mac and click the Storage tab. For Time Machine backups, it's good to use a drive that has at least twice the storage capacity of your Mac.
macOS can save space by storing your content in the cloud. This isn't a backup, but it includes new tools to make it easier to find and remove large or unwanted files before you make a backup.
Use Optimized Storage in macOSYou can use Disk Utility if you need to erase or format a storage device.
Learn how to use Disk UtilityAsk everyone. Our Apple Support Community can help you find answers.
Ask the Apple Support CommunityAnswer a few questions and we'll help you find a solution.