Answer
Why not burn your saved folders to a CD or DVD that way you are sure to have them if your computer gets a virus and you can't open it.
disk or hard disk
The hard disk is the device that stores the folders.
Top-level
Folders
The Acronis Disk Director software manages the hard disk and how the software and various files and folders that are on it are located and stored. It also works constantly to maximize the speed of the hard disk.
hard drive / hard disk
So called sub-folders,there are no limit except your hard drive empty space
It depends on whether the data had been saved at the time the power went out. If it was saved before the outage, then it will remain on the computer's hard disk. If it was not saved, then it is almost certainly lost.
Just like recovering the lost files on external hard disk, you can use a program to scan the partition, the location of the deleted folders. You can read this guide,
Typically on a mass storage medium such as a hard-disk drive.
Disk cloning is the copying of the contents of one hard disk to another hard disk. In the alternative, a cloning copy can also be saved as an "image" file; a compressed file containing a "snap shot" of the hard drive's contents.
Only if you have saved it to your hard drive.