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My Hardware is a 2019 MacBook Pro 15" has the T2 chip and runs macOS 11.0.1.

After disabling SSV via csrutil authenticated-root disable and rebooting I can not enable FileVault. Unfortunately the error is very generic: "FileVault Failed An internal error has occurred."

Is it possible to have signed system volume (SSV) disabled but FileVault enabled?

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  • My hunch is you lose everything when you disable everything with that command but we will surely test this a bit down the line when we evaluate BS security at work (lol) - the guide usually updates each spring - support.apple.com/guide/security/welcome/web – bmike Nov 14 '20 at 18:40
  • My understanding is that you have to have Filevault off to disable SSV. Can't help much more, as I haven't read much into the new SSV feature. – AVelj Nov 17 '20 at 11:06
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According to user experiences - this is not possible. Disabling SSV will leave the system stripped out of both SIP and File Vault.

https://eclecticlight.co/2020/06/25/big-surs-signed-system-volume-added-security-protection/#comments

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  • I've also heard (but can't confirm), that disabling SSV prevents you from using Apple Pay as well. – AVelj Dec 19 '20 at 5:23
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    Yes, not just ApplePay but all protected features.On M1 Macs - it will disable all iOS (iphone/iPad) apps... – Belter Dec 20 '20 at 7:41
  • Interesting, didn't know that @Belter. Also welcome to Ask Different :) – AVelj Dec 20 '20 at 10:01

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