Disabling Legacy FileVault, Post-Upgrade

Question

Disabling Legacy FileVault, Post-Upgrade

I'll keep this short. I have a MacBook that I upgraded from El Capitan to Mojave. However, my user account was protected using Legacy FileVault. I didn't know about Apple dropping support for Legacy FileVault until I encountered an error when trying to login to my account after the upgrade.

Is there any way that I can decrypt the account? Perhaps from Recovery, or maybe through use of a third-party utility? I have a second Admin account on this MacBook that didn't use Legacy FileVault as well, if that helps.

I'd like to avoid losing the account if possible.

MacBook, OS X 10.11

Posted on Jul 2, 2020 2:52 PM

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Answer 1

Jul 2, 2020 3:01 PM in response to TopHatProductions115

TopHatProductions115 wrote:

I'll keep this short. I have a MacBook that I upgraded from El Capitan to Mojave. However, my user account was protected using Legacy FileVault. I didn't know about Apple dropping support for Legacy FileVault until I encountered an error when trying to login to my account after the upgrade.

Is there any way that I can decrypt the account? Perhaps from Recovery, or maybe through use of a third-party utility? I have a second Admin account on this MacBook that didn't use Legacy FileVault as well, if that helps.

I'd like to avoid losing the account if possible.

Change FileVault preferences on Mac - Apple Support

OS X Legacy FileVault

About Startup Security Utility - Apple Support

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Answer 2

Jul 2, 2020 4:09 PM in response to leroydouglas

Can I use an external USB to boot up El Capitan (live USB) and permanently decrypt the sparsebundle for the account? I got the idea from looking at this article that you posted:

https://support.apple.com/en-us/HT208198

If not, I may just resort to nuking the MacBook and doing a clean install.

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Disabling Legacy FileVault, Post-Upgrade

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