Subj : How to boot from SD but run from US
To   : Dave Vandermeer
From : Grant Weasner
Date : Tue Mar 11 2025 17:17:31

  Re: How to boot from SD but run from US
  By: Dave Vandermeer to Dennis Slagers on Wed Feb 26 2025 17:45:00

 > Actually I did read somewhere that it is possible. Technically you only need
 > to use the SD card to boot to init, so modify your /etc/fstab to change the
 > location of your root partition to the device of the USB drive.
 > (Theoretically, I haven't booted my Pi's in quite some time.. rapidly losing
 > interest in running a BBS) ..

if  you need to and want to know how to setup a raspi to run off a usb drive, while only booting to sd card, let me know. I can respond with instructions. I have ran my raspi using usb drive since raspi b+.

newer raspi devices are easier to setup that way, specifically if you have a newer raspi. the imager that is with the rasp os has an option for what drive to write a new image to.

I've taken my existing os on sd card, put in the usb drive I want to run off of and wrote out everything to the usb drive, modified the boot config files and /etc/fstab, reboot to run off usb drive.

raspi b can be run this way pretty nice.
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