Hi Giles - watched your v detailed and useful video with interest. I was booting from SSD successfully until i did a full apt-upgrade a couple of nights ago. Then chaos. I have been through my blkid, /etc/fstab and /boot/cmdline.txt and can see no errors. But when I boot from SSD I get a failed to find target message (after a systemctl rfkill message) then I can't proceed. No way of TTY-ing in. When I alter fstab to point to the SD card for /boot nothing happens at all.

I have quite a bit of material on the SSD which is not backed up for reasons in next para. Can I check and update the firmware on the SSD without booting from it? I can insert the SSD into a linux machine and work off the console.

Reason the SSD was not backed up is that it is larger than my SD. I have a NTFS data partition on the SSD which is not on the SD, even if I offload all the data. The RPi card copier will not image part of a device. I tried a simple dd fi /dev/sda1 fo /dev/sdb1 (and same for the /root partition) to a 32Gb USB, but this didn't appear to work - at any rate i failed to boot from the SSD afterwards.

Any advice you may have will be helpful - atm my only course of action seems to be to reinstall to the SSD from scratch using a fully updated and fw upgraded image, then install gparted to add my data partition again. However, I would be wary of dd'ing the first two partitions again - there must be a better way!

Thanks for any useful words ..

Best
R

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