On my own system I did an install of the OS (I'm using 8.1)
Then I did an "image" out of it which goes into a USB key (I got a 128 Gb but the backup uses FAR LESS than this)
Every year I reinstall my system from the image.
All data/programs are stored in separate disks and the only needed thing is to update the drivers for the graphic card.
Re-imaging the disk from the USB is 5 minutes.
So all the install/configuration part is only done once.
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