Compute Module • Re: Flashing hardware (µUSB connector separated from carrier) mid-flash - CM4 gives failure for SD (EMMC) on boot

So yes, it will boot off of an NVMe drive.

Oddly enough, the bootstrap in the MBR on the EMMC was zeroed out.

AFIAK, there should not be anything from 0-440 in the MBR for Pi/BCM SoCs.
There is a disk signature:
c5 5a 7b 0a
and a partition:
00 20 21 00 0c c2 22 20 00 08 00 00 00 00 08 00
and a boot signature:
55 aa

see: https://en.wikipedia.org/wiki/Master_boot_record
I haven't looked at if that partition is valid.

I usually wipe the 1st 440 or 446 bytes

Statistics: Posted by redvli — Sun Sep 29, 2024 9:12 am

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