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Wiping hard drive on MacBook Pro - Which drive do I select in Disk Utility?

230 Views 2 Replies Latest reply: Jan 8, 2013 7:27 PM by doggerel75 RSS
doggerel75 Calculating status...
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Jan 8, 2013 3:42 PM

Let me start with the typical noob apologies for the cluelessness of the following question.  Here's the deal:

 

My girlfriend generously gave me her laptop and I'm trying to wipe it to factory conditions.  It's a MacBook Pro (mid 2010), running OS X Lion (10.7.5). 

 

After holding Command-R on startup to get to Disk Utility, I see two drives listed in the top left-hand corner of the directory.  One is labeled "250.06 GB TOSHIBA" and the other--a subheading--is just labeled "Harddrive" (all one word). 

 

Which one do I select for erase?  Does it make a difference?  Do I do one first and then another?   Again, sorry for the dumb question--I just don't want to mess anything up.  I've attached a photo of the screen to show you what I'm looking at.  Thanks so much!  ScreenPhoto.JPG

Mac Pro, Mac OS X (10.7.3)

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