if the drive is still able to mount:
sudo rsync -ruhP –bwlimit=1000 <source file/folder> <dest file/folder> 2>> ~./rsyncErrors.txt
also good read:
https://help.ubuntu.com/community/DataRecovery#Imaging_a_damaged_device.2C_filesystem_or_drive
Create entire disk backup with DD
Most of the times if you just need to make a drive backup
sudo dd if=/dev/disk# conv=sync,noerror bs=64k | gzip -c > <ouput filename>.img.gz
if you need trottling because you have a bad disk drive
sudo dd if=/dev/disk# conv=sync,noerror bs=#k | pv -L 10m -s 500g | gzip -c > <ouput filename>.img.gz.img.gz
Compare/Sync/Backup files & folders
Need something that gives better performance than diff or diff -rq
FREEESYNC
Czkawa
https://github.com/qarmin/czkawka
dopeGuru
Raspberry pi in kiosk mode?
Dowload and install raspberry pi imager. Install 32bit or 64bit full image set options as needed.
Disable Screen Blanking
https://pimylifeup.com/raspberry-pi-disable-screen-blanking/
And autoload Chromium browser in kios mode at startup
https://linuxhint.com/use-kiosk-mode-chromium-raspberry-pi/
And disable mouse cursor
https://raspberrypi.stackexchange.com/a/109078
done