Using Macrium Free to Backup or Image your drives
A trick to lower the system image size is to leave partition c: without any programs (installing them in d: or other partitions).
Therefore you'll have only windows system files on c: (and very few windows programs in "c:\program files" and "c:\program files (x86)").
In this way, I have to select only the efi/esp partition, ms partition, windows partition and recovery partition(s).
The image occupies between 15 and 20GB and I can put it in another partition (in another disk).
It would be
better to put it in an
external HDD/SSD.
The recovery media must be tested; it have to work if things go wrong.
If you have
very important files, or programs, on other partitions and disks, it would be better to create a FULL system image.
Or to backup at least the important files.
In both these cases, it's better to put the backups in external disks.