Wiindows 10 and data folder

MINITOOL is a great free utility if you want a alternative method.

Keeping your data on a separate disk/partition (as you are doing) is highly recommended.
If you create an image of your Operating System on C:, you are keeping the image to a reasonable size as you are not imaging your data - just your OS.
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I have always created a partition D for all my data files to shield them from the Internet.

That is not the way things work - connected data is always vulnerable.

Backup your data on D: separately and don't leave the backup media connected.
Ransomware can encrypt data on all connected drives (Including network drives)

thanks.   toeirman re "tht is not the way things work -connected data isalways vulernable"   question:
if the data is being held in a separate partition (D) to the OS (C) could you please explain why it is vulnerable.

Just to be clear ........
Any data files you can find yourself anywhere on your own PC or network are vulnerable to Ransomware attack.

These data files could be: Access, Word, Excel, JPGs, MP3s, Text, Powerpoint etc, etc.

Cryptolocker was the first widespread ransomware (Started in 2013)

With common sense and some sensible precautions such as not being logged in as an Admin user unless you need to be, you can easily avoid ransomware.

thanks for all your help.   that was very useful