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The following diskutil cs resizeStack command is vastly undocumented and as such potentially destructive. There might be an easy way outlined first and a long winding, time consuming hard way. Please backup your Mac OS X before proceeding. The not-as-long-as-expected way: A 2nd computer or an iPhone with the stackexchange credentials to enter the site ...


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You cannot erase the currently-running volume. Shut the computer down, restart while holding the option key, and choose the Recovery HD. Find Disk Utility in the menus and you will now be able to erase your internal storage.


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Klanomath's procedures are 100% correct if it's a hard drive. I use a tool named Scannerz to evaluate drives and it's extremely conservative. If you find bad blocks their procedures are pretty much exactly what Klanomath described, except it will be quite evident how extensive the damage is during testing. SMART technology only finds bad sectors if a write ...


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The phenomenon derives from a faulty Apple Script mounting a Time Machine sparsebundle image from a smb-share serving as a Time Machine backup volume to /Volumes. The mounted image interferes with (maybe any) other mounted volume(s) there The faulty Apple Script: try mount volume "smb://someserver/DATA" end try do shell script "/usr/bin/perl -Ue ...


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I have found that using Recovery Partition Creator 3.8 works for me. I use Carbon Copy Cloner to clone the other partitions but Recovery Partition Creator for the Recovery HD partition. It appears to handle the issue of removing partitions after the Recovery HD partition properly, and also works if you have left free space after the volume that the ...


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Ha, found it! It was a corrupted ".Trashes" folder in the root of the SSD. It occupied me than 100GB of data (see screenshot). I managed to make these files visible by running GrandPerspective from the command line: sudo GrandPerspective.app/Contents/MacOS/GrandPerspective That will show the files but still it is not possible to delete them. Even sudo ...


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According to wikipedia 3 levels of formatting are common: Low-level formatting (i.e., closest to the hardware) marks the surfaces of the disks with markers indicating the start of a recording block (typically today called sector markers) and other information like block CRC to be used later, in normal operations, by the disk controller to read or ...


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Plus 1's for everyone as far as I'm concerned. A good question and two good answers. I'd like, however, to emphasize the following quote from Bob O: Steer clear of any tool that tells you it's going to take a bad sector and "repair" it. There's no such thing. That's a dishonest marketing trick that has it's roots back in the 1980's when drives were ...


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With the encryption process included in Yosemite there is a duplicate drive created in the space after the drive that was encrypted. If I'm entirely honest I don't know how that works or what its purpose is I just know that every encrypted machine in this situation has it. That being said you can see using diskutil that your ssd does have a recovery drive on ...



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