[EdLUG] Help

[Jeremy Nicoll]

On Wed, 8 Jul 2020, at 19:52, Andrew Ramage wrote:
>  I commented out some lines in fstab that I had entered, mounting SD 
> cards. 

Yes, I read that.  Is that the only thing you'd changed?

Is there any software on the SD cards that your system requires, to run
properly?

Or are the files there just data (and not essential config files or logs or 
anything that the system will try to use)?



> I have now created a recovery boot USB drive, but the main system boots 
> to its normal screen. How do I get the system to boot to the USB ?

No idea.  I (not expert in Linux) do not know what you mean by boot /to/ USB.

If you mean that you wish to boot /from/ USB, then I expect you'd either need
to change the machine's BIOS (or whatever) telling it to look for a bootable OS
(or loader of some sort) on the USB drive, or - if it's still booting from something
else, provide parameters on the initial boot screen telling it to use the USB files
instead of wherever your system normally is.   I'm sorry I don't know the right 
terminology for that.


-- 
Jeremy Nicoll - my opinions are my own.