Case sensitive volume ?

I have just loaded ElCapitan on my iMac. I somehow lost my Adobe Photoshop CS6 application.

When I try and re install it I get a message saying " Installation on case-sensitive volumes not supported. Choose different volume for installation."

What does this mean, please?

iMac, Mac OS X (10.7.3)

Posted on Nov 3, 2015 2:49 PM

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Posted on Nov 3, 2015 2:56 PM

It means that you have your hard drive formatted in a case sensitive format, probably "Mac OS Extended (Case-sensitive, Journaled)". That means that you can have files named (for example) test.txt, Test.txt, and TEST.txt and they will all be separate, individual files.


Do a Get Info on your hard drive to see how it is formatted.

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Nov 3, 2015 2:56 PM in response to MikeFast

It means that you have your hard drive formatted in a case sensitive format, probably "Mac OS Extended (Case-sensitive, Journaled)". That means that you can have files named (for example) test.txt, Test.txt, and TEST.txt and they will all be separate, individual files.


Do a Get Info on your hard drive to see how it is formatted.

Nov 3, 2015 9:53 PM in response to MikeFast

You should be able to use either of the third-party applications "Carbon Copy Cloner" or "SuperDuper" (free for this purpose) to copy your case-sensitive volume to an empty case-insensitive one. Make at least two such copies on different drives. One is not enough to be safe.

If there are any name conflicts—that is, files in the same folder with names that differ only in case, such as "File" and "file"—then you will either get an error or one of the files won't be copied. You must ensure either that no such conflicts exist, or that the consequences are not important. How you do that is up to you. Unless you went out of your way to create conflicts, they probably don't exist.

Then erase the source volume in Disk Utility as case-insensitive. This action will remove all data from the volume. If the volume is the startup volume, you must start up in Recovery mode or from another drive in order to erase it.

Restore from one of your backups using the same application you used to create it, or use the "Restore" feature of Disk Utility, which will be faster. Search its built-in help for the term "duplicate" if you need instructions.

Nov 16, 2017 4:45 AM in response to Linc Davis

I was trying to install Adobe on a case sensitive-formatted hard drive, so I followed instructions to duplicate the main partition into another one and then to restore from the new one. However, when I removed the main partition, I wasn't able to boot from it, the Mac displays the "stop sign". I've tried holding Option, but to no avail. THere is only one partition, not 3 like it is supposed to be and I can't even reinstall the whole OS.

Any help?

EDIT: I managed to create a portion and I’m installing Mavericks now onto it. But.. will I be able to restore the data? :(

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Case sensitive volume ?

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