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389 posts

Ultimate Geek

#237876 21-Jun-2018 19:41
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Ok so I've found the 1T hard drive I bought a few years ago and want to use it to back up the macbook


I've plugged it in and set it up, but it asks me if I want to erase it... I of course select no because it does have stuff on it I want to keep.... but it won't allow me to use it unless it is erased.


there are some folders of stuff on the drive that I don't need / want, but I can't delete them or remove them


does anyone know how I can still use it to back up the macbook without having to erase it? or how I can remove the folders on there that I don't need?


any help would be appreciated

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4789 posts

Uber Geek


  #2041974 21-Jun-2018 20:25
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Can you open any of the files on the drive? Were the files loaded onto it using a Mac, or some other platform?


389 posts

Ultimate Geek

  #2041989 21-Jun-2018 20:41
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I can open the folders / files but can't delete anything in any of the folders or any of the folders themselves


they were all put on the drive in 2010/2011? via a windows desktop computer - if that helps


1024 posts

Uber Geek

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  #2042010 21-Jun-2018 21:02
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Your external drive is almost certainly NTFS (Windows Filesystem) formatted.


You can't use that for MacOS Backup unless it's completely reformatted to Apple's "Mac OS Extended" filesystem type.


Chances are that the version of MacOS you're running has "read only" support for NTFS, which is why you can't delete anything from the drive.


The easiest (where "easy" is a relative term!) way of fixing this is to *copy* the directories etc you want to keep off the drive either onto another drive OR the internal drive on the Mac (assuming you have space), and then reformat.


You should be able to remove unwanted files/directories from another Windows PC if you have access to one to simplify the copying.



4789 posts

Uber Geek


  #2042019 21-Jun-2018 21:30
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If all else fails then it wouldn't be particularly expensive to just buy another 1Tb portable hard drive.

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