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  1. #1
    Unique Partitioning Question
    Hello all,
    I thought about making my first post a tough one.

    For whatever my reason may be, I wish to set up three partitions on an external harddrive, one as a Pc and one as a mac, the third, needs to be unusable. I understand it sounds crazy. But I'd like to make the third partition unusable to write/read

  2. #2
    Unique Partitioning Question
    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,572
    Your Mac's Specs
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
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    Just create 2 partitions whatever size you want and don't create a partition on the balance of the drive - voila - unusable.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  3. #3
    I wish that was the quick answer. But I'm looking to create two smaller partitions and use the third partition to render the rest of the drive useless. Sounds illogical, I know, but that's what I want to do.

  4. #4
    Unique Partitioning Question
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    58,874
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 7+, iPhone 8, Numerous iPods, Mojave
    Rep Power
    53
    Create the two smaller partitions first, then create the third partition and protect it with encryption. Just about any encryption scheme that's any good will render the third partition inaccessible or useless.

  5. #5
    Quote Originally Posted by chscag View Post
    Create the two smaller partitions first, then create the third partition and protect it with encryption. Just about any encryption scheme that's any good will render the third partition inaccessible or useless.
    Is there any unique program i should use to do that? I tried going in and using Disk utility, but it did not give me any way to encrypt the drive.

    Thanks!

  6. #6
    Unique Partitioning Question
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    58,874
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 7+, iPhone 8, Numerous iPods, Mojave
    Rep Power
    53
    Here' a free method: LINK

    And here's PGP for Mac OS X now owned by Symantec: LINK

    There are other schemes also. Use your Google search engine.

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