> The M1 boot process requires a working SSD to boot macOS. The SSD contains a Signed System Volume that is cryptographically sealed by Apple. No seal, no boota

> The M1 boot process requires a working SSD to boot macOS. The SSD contains a Signed System Volume that is cryptographically sealed by Apple. No seal, no bootable System. > So if the internal drive on your M1 Mac fails completely, even an external bootable drive won't boot. Yep, your Mac is bricked. https://www.zdnet.com/article/how-bad-is-the-m1-macs-ssd-failure-problem/ https://www.zdnet.com/article/how-bad-is-the-m1-macs-ssd-fai...