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Is there a way to run a 32 bit application after macOS 10.15 Catalina?

I used a 32 bit LaCie "Private-Public" application, to secure my most essential files, which I haven’t been able to access since installing macOS Catalina 10.15.


Many times, I contacted LaCie for help but they never responded.


Is there a way to run a 32 bit application without reverting to an earlier 32 bit macOS (10.14.6 Mojave)?


Thank you!

iMac Line (2012 and Later)

Posted on Sep 30, 2021 12:50 PM

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4 replies

Sep 30, 2021 5:41 PM in response to Faulty-from-the-Factory-iMac

To add to a bit of detail to the advice from @Ronasara...

Encrypt and protect a storage device with a password in Disk Utility on Mac - Apple Support


As for your current dilemma, it does appear you are going to have to create a boot drive or volume with Mojave or earlier in order to use that 32-bit encryption app from LaCie, unfortunately.


Perhaps you can use recovery mode to install a previous macOS version onto a spare external hd or USB stick. Please have a look at the section "Other macOS installation options" in this support document:

How to reinstall macOS - Apple Support


Is there a way to run a 32 bit application after macOS 10.15 Catalina?

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