Apple Silicon Macs can't boot from external drive if internal drive failed

Re:Apple Silicon Macs can't boot from external drive if inte... by KennyBlanken on Tuesday November 02, 2021 @02:07PM (#29085128)

Apple SSD module failures on portable Macs are quite common. A buddy has a computer repair shop and they do brisk business replacing them. Mine failed about 5 years in.

SSDs are wear items. Especially when they're quite full, it is very easy to blow through spare writes and brick the drive.

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Re:Apple Silicon Macs can't boot from external drive if inte... by jbverschoor on Tuesday November 02, 2021 @02:28PM (#29085443)

There was a problem with some of the SSDs where they corrupt themselves on powerloss.

That’s a totally different reason, and afaik, they should be using proper caps to let the controller write/flush their buffers.

My last MacBook Pro was 7 years old, almost always full, and still works fine. Granted I’m not a video editor, but I had quite some write cycles.

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Re:Apple Silicon Macs can't boot from external drive if inte... by floatingatoll on Tuesday November 02, 2021 @02:23PM (#29085357)

Did those modules fail readonly, and the SMART data showed that their write limit had been reached?

Or did the entire module electronically fail, as distinct from the SSD "no more writes" case?

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