Subj : Re: How to boot from SD but run from USB?
To   : The Natural Philosopher
From : Lawrence D'Oliveiro
Date : Tue Jan 28 2025 02:09:02

On Fri, 24 Jan 2025 11:44:19 +0000, The Natural Philosopher wrote:

> If you only adjust that line, you will
> still have the fstab on the USB drive mounting the SD boot partition in
> /boot/firmware.  So the kernel will get updated OK automagically.

That doesn’t sound right to me. /etc/fstab is interpreted by a userland
process (/sbin/init). That only starts running after the kernel has been
booted. So mounting the boot partition at this point will make no
difference to your running kernel. (Presumably /boot/firmware might
contain firmware relevant to connected hardware and its drivers, but
that’s a separate issue.)

(Not a Raspberry Pi user, but this should be basic Linux stuff common to
all architectures.)

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