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Apple Computing Products:
macOS - Operating System
What if I upgrade??
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<blockquote data-quote="pigoo3" data-source="post: 1914583" data-attributes="member: 56379"><p>I don't think downgrading (in the same manner as upgrading) is possible. I've never done it.</p><p></p><p>Depending on the age/version of the plug-ins...you will almost certainly will lose some compatibility. You may lose compatibility with some apps as well.</p><p></p><p>If you wanted to move forward to test things...my suggestion would be to:</p><p></p><p>1. Clone your drive first on an external drive. </p><p>2. Then do the upgrade.</p><p>3. See what does & doesn't work.</p><p></p><p>If you don't like what you see:</p><p></p><p>1. Nuke the drive (erase the main partition...not the recovery partition).</p><p>2. Boot the computer from the external drive with the clone on it.</p><p>3. Restore the clone to the internal drive.</p><p></p><p>Good apps to use for the cloning & restore are Super Duper & CCC (Carbon Copy Cloner).</p><p></p><p>Another idea is try to find out what the macOS compatibility is of each Photoshop plug-in. If a bunch of them are not compatible with Catalina...maybe sticking with High Sierra is what you got to do (or spend $$$ update/upgrade everything).</p><p></p><p>HTH,</p><p></p><p>Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1914583, member: 56379"] I don't think downgrading (in the same manner as upgrading) is possible. I've never done it. Depending on the age/version of the plug-ins...you will almost certainly will lose some compatibility. You may lose compatibility with some apps as well. If you wanted to move forward to test things...my suggestion would be to: 1. Clone your drive first on an external drive. 2. Then do the upgrade. 3. See what does & doesn't work. If you don't like what you see: 1. Nuke the drive (erase the main partition...not the recovery partition). 2. Boot the computer from the external drive with the clone on it. 3. Restore the clone to the internal drive. Good apps to use for the cloning & restore are Super Duper & CCC (Carbon Copy Cloner). Another idea is try to find out what the macOS compatibility is of each Photoshop plug-in. If a bunch of them are not compatible with Catalina...maybe sticking with High Sierra is what you got to do (or spend $$$ update/upgrade everything). HTH, Nick [/QUOTE]
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Apple Computing Products:
macOS - Operating System
What if I upgrade??
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