Windows 10 is less likely to become faulty as Microsoft has done much to protect the system from bad drivers etc. Still hardware faults etc can crash Windows.

To get started a 32GB USB stick us now low cost and more than enough room, Older low capacity sticks might be OK but depending on the size of the recovery. Windows will prompt for the minimum capacity needed.

Use Cortana and select “Create a recovery drive” and the control panel item is the one you want.

The connect the USB disk and select “Next”. Copying system files may take some time as USB sticks are comparatively slow.

Organizing USB sticks is important so that the recovery is not lost.