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From: Chris Green <cl@isbd.net>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: How to boot from SD but run from USB?
Date: Fri, 24 Jan 2025 13:43:07 +0000
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The Natural Philosopher <tnp@invalid.invalid> wrote:
> On 24/01/2025 12:55, Chris Green wrote:
> > The Natural Philosopher <tnp@invalid.invalid> wrote:
> >>
> >> But frankly its almost always easier to install everything on the USB
> >> drive and remove the SDcard altogether.
> >>
> > As I understand it that's not possible with Pi before Pi 2 version 1.2
> > or something like that.  Basically Pi 3 and onwards can simply boot
> > from USB, earlier ones can't.
> > 
> 
> Yes, that is my understanding also. I think there was a time when you 
> had to boot from SD and run a comm,and to change a flag in the firmware 
> to allow USB only boot.
> 
> I have a Pi 4B and its supremely ecstatic booting from USB. And it's a 
> totally simple setup
> 
Yes, but my original question was (intended anyway) about booting an
early Pi such that it actually runs from USB after booting from the SD
card so that SD card wear isn't an issue.

-- 
Chris Green
·