What To Do When A Hard Drive Fails
When a hard drive crashes, you can lose all your data. Corrupt hard drives happen out of the blue and for seemingly no good reason. If your hard drive fails, what can you do?
One option is to call a hard drive recovery company. If your data is worth a lot of money to you, you can pay a forensic computer company to get the data off your hard drive. Before you write a check though, try a little Do-It-Yourself first.
What is going on inside the hard drive is a bunch of little platters spinning at high speed. When data is accessed or written to the disk, a little head (sort of like on a record player) moves to the right spot and does it's magic. The space between the head and the platter is very very tiny. Freezing the hard drive will shrink the head and the platter ever so slightly, often allowing you to read data.
Here is how I got the data off of a failed hard drive.
- Remove the hard drive from the computer.
- Place the hard drive inside of a zip top freezer bag. (don't buy a cheap bag.)
- Place the wrapped hard drive inside of ANOTHER zip top freezer bag. (yes, you need to do this) (see figure 1 below)
- Place the double wrapped hard drive in the coldest part of your freezer.
- Leave the hard drive in the freezer for 12 hours at least. You want it good and cold! (see figure 2 below)
- Once very chilled, install the hard drive in your computer and start pulling off data. Begin with the most valuable data.
- At some point, the hard drive will fail again. When it does, mark the last successfully copied data, pull out the hard drive, double wrap it again and stick it in the Chill Chest for another 12 hours.
- You may need to do this a number of times to get all the data you want, or until the hard drive stops working completely.
Double Wrapped Hard Drive

Hard Drive in the Freezer
(Note: Opinions expressed in this article and its replies are the opinions of their respective authors and not those of DZone, Inc.)






Comments
Boyan Kostadinov replied on Mon, 2010/04/05 - 9:11am
Brian Reich replied on Tue, 2010/04/06 - 6:51am
Jean Said replied on Tue, 2010/04/06 - 6:54am
I own a LaCie mirroring raid system and a drive in my setup had corrupted sectors. The corrupted data was replicated to the other disc. Enjoy.
Manuel Jordan replied on Tue, 2010/04/06 - 8:23am
Hello Dan
Pretty cool information, thanks for share it!
I have heard years ago about this, but me and some friends thought that was a type of joke. Now I can see is true
I have two computers, the unique part that I normally must change in 1 to 2 years for each computer is the hard disk, is really horrible start listening the sound that indicate that your hard disk going to die soon, the storm of ideas coming
Eggy Wat replied on Tue, 2010/04/06 - 12:05pm
Good advice for a last resort solution. If you use your computer for any serious business related work, the best approach is to minimise such disasters by setting set up a server running opensolaris and a zfs raidz2/raidz3 disk array with hot spares. (zfs has live data scrubbing which helps remove risk of data rot from bad sectors etc.)
http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_GuideFab Mars replied on Wed, 2010/04/07 - 7:13am
I tried this trick twice and it worked once.
With nowadays HDD capacity price, the best is to set mirroring/backup up.
At work we have Raid5 on a SAN and tape robots.
At home I wanted to keep it simple, but I took into account the risk of burglary. So I have 2 backups. One is a single relatively small disk for day-to-day stuff and runs with a scheduled job. The other is a full synchronized copy of the whole data. The backup drives are hidden in a safe place. I dig them once a week, hotplpug, mount, run some rsync script, unmount, put them back in their safe place, and voilà.
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in response to:
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Carla Brian replied on Wed, 2012/06/27 - 10:41am
Max Pain replied on Wed, 2013/05/08 - 10:56am
An actuator arm moves the heads on an arc across the platters as they spin, allowing each head to access almost the entire surface of the platter as it spins. RV Trailers For Sale
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