1 pointCatalina works off most NVME M.2 SSDs. I tested the Toshiba RC100 2242 model with macOS if that's of interest to you; see our SSD benchmark thread for details. All you really have to ensure is that the WWAN slot supports NVME SSDs and that the slot is bootable. That's essential or you'll be kinda screwed. Not all models support both like. Eg: E7x50 models -> NVME SSDs supported in the WWAN slot but not bootable!
1 pointcan you post debug file?
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