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DiskRefresher is ideal for users who need to refresh multiple external disk drives safely and simply. Hard disk drives are designed to be used regularly, not stored on a shelf for months or years. The magnetic strength of the digital bits recorded on a drive slowly decays when that drive is disconnected from a computer. After many months, this effect can cause data files to fade, sometimes becoming unreadable. DiskRefresher makes the time-consuming process of refreshing multiple, external disk drives simple and safe. At launch, DiskRefresher lists the external storage drives you have mounted and shows each drive's storage more...

What's New

Version 1.2:
  • Minor bug fixes.


  • Mac OS X 10.6 or later
  • 64-bit processor

*Previously available here

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DiskRefresher User Discussion

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Macrob Member IconComment+13

I can't say if this software works or is necessary, but I have heard of bit rot before. Usually I just make backups of the things I know I can't lose on DVD.

My question is, how this software forces a refresh. Does it run like a surface scan? Meaning does it refresh the whole disk, even the free space? And does it read the disk, or volumes? Can I run it on a disk that is not OSX compatible? (I understand the hardware has to be compatible) I have some hard drives that have old amiga volumes, a next hard drive, and a few windows drives.

Reply1 reply
Version 1.2


Borlox Member IconComment+222

This is the biggest crock I've ever heard of. It's outrageous that such an obvious scam was allowed on the App Store.

Reply2 replies
Version 1.2

I agree! As for "research" or a "study," Larry Jordan doesn't even CLAIM that anything on his site is anything more than his own understanding plus his own interpretation of stuff that he's read about and/or has chatted with people about. He is no part of a computer-scientist and doesn't claim to be one. As for the referenced article on HD "decay," I couldn't find it on Jordan's site. Borlox writes, "WAS allowed." Has the App Store gotten rid of it?


The article on the Larry Jordan site now appears to be here:


It's an interesting read. I don't know much about this phenomenon, so I will offer no opinion on this app's value. From some very brief research, my sense is that the issue is real, but most users will never be affected by it. If you're storing important data on drives that will be powered off for a long time (i.e., over a year), it may be worth looking into further. In any case, the linked article explains a couple of techniques for performing a data refresh using Terminal.

Flavum Member IconComment+136

Can anyone direct me to something more than the anecdotal evidence provided by the developer of hard disk data "fading" over time (like actual research or a study of some kind)? It would seem to me that either the data is intact, or it isn't. Corrupt data needs recovery software - does this app provide that feature? Exactly what does it do when it discovers disk problems? Sounds a bit sketchy, but I'd love to be proven wrong by a clearer, more informative description.

Reply2 replies
Version 1.1
Pubblog.com (Developer)

There's a link to an article about disk data fading on the web site and the help screen. Here it is:



Said link does not exist. Data is binary - it's there, or it's not. "Refreshing" is simply misleading BS.

Lvdoc Member IconComment+535

I tried going to the developer site, but got this message:

Too many redirects occurred trying to open “http://www.macupdate.com/developer_site/38057/diskrefresher.com”. This might occur if you open a page that is redirected to open another page which then is redirected to open the original page

But, hey, I'll be sure to give you guys $6, sight unseen. Any chance of a demo? Or do those not exist anymore since the advent of the App Store?

Reply1 reply
Version 1.1
Pubblog.com (Developer)

That is a problem with how MacUpdate links to the site. Here is the link to the site:


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Current Version (1.x)


Downloads 4,993
Version Downloads 1,974
Type Utilities / System
License Commercial
Date 13 Jul 2011
Platform Intel 64 / OS X
Price $5.99