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Mac Tech
Mac Tech, Apple Specialist
Category: Mac
Satisfied Customers: 1597
Experience:  7 + Years Supporting Apple Products
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I accidentally erased a 500 gb external hard drive... I

Resolved Question:

I accidentally erased a 500 gb external hard drive...
I am hoping to UNERASE it .

I have found various online Unerase programs.
I choose one called Nucleus Mac Data Recovery Software 4.03

I downloaded it. But when I try to open it, it just opens into
an illegible text document ... NOTHING ... don't know how to open
or run this program....

ANY THOUGHTS ? Advice,...

Would be massively appreciated...


Submitted: 5 years ago.
Category: Mac
Expert:  Mac Tech replied 5 years ago.
Hi, and thanks for using JustAnswer.

Add this page to your Favorites/Bookmarks first, so as to get back to me anytime later on, if needed.

If you have not overwritten any data on the drive you have a better chance at recovery. The data can be most certainly extracted if you wish to employ a data recovery company. This can be expensive and only you will know if the cost is worth recovering the data. Here's a link to a company I have used before and provided excellent results. You can also give them a call and they will provide you more details and an estimate:
Customer: replied 5 years ago.

And what about the programs that claim to be able to easily unerase the harddrive?

Have you ever used Nucleus Data Recovery Software 4.03 ???

Many claim it works ... but I can't get it to open ????

Do you not recommend trying this route ?

Or, if so, how do I go about opening this downloaded file ?
With WHAT program (application) should I open the downloaded program ?

ucleus Mac Data Recovery Software 4.0

Expert:  Mac Tech replied 5 years ago.
I don't know that program. You may try this one. But, remember, anything you continue to do to the hard drive after the deletion will lessen your chance to recover the data.
Customer: replied 5 years ago.

I went into Disk Utility ...
I chose ERASE (as I thought I was formatting a DIFFERENT external Hard Drive)
Then I formatted it with a new name.

Now it claims to be empty.
HOWEVER, the Mac claims that it isn't really erased, just the file access is
messed up ...

SO ... is there a way to simply BACK UP a few steps (restore?)
or is this a case where I need to bring in my Hard Drive and let
the specialists fix it ?

have you used ???

Do you recommend it ?

Can you walk me through it ?

Do you think it will work ?

Expert:  Mac Tech replied 5 years ago.
If I were you, I would call Drive Savers and speak with them first before doing anything. If you then decide that you DO NOT want to go that route, then I would suggest you try the software. It's very user friendly. I don't think you'll have any trouble using it.
Customer: replied 5 years ago.
OK, I would like to try to use the software ...

I am hoping you can walk me through it ...

I choose download and it gives me two choices:

1 - OPEN (Archive Utility)


Which option should I choose ?

Expert:  Mac Tech replied 5 years ago.
Save file, then save to your desktop if you can.
Customer: replied 5 years ago.


I downloaded it ... double clicked it (it was zipped) ...
it unzipped ... then I copied that over to the desktop ...

I appreciate your help on this...

Now what ?

Expert:  Mac Tech replied 5 years ago.
Double click the .dmg file on your desktop and then when you see the Panel, drag the software icon to the Application icon. Then look in your Applications folder for StellarPheonix and execute the program.
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