To begin, open “My Computer” by clicking “Start > My Computer”

Browse to “My Pictures” by double-clicking “Stuff” and then “My Pictures”

Select about half of the folders by clicking and dragging a rectangle around them. Start dragging in a blank space (as picture suggests).

Right-click one of the selected files and click “Properties”

If the “Size on Disk” value is greater than the capacity of the memory stick, try a smaller selection. On the other hand, if the “Size on Disk” is significantly lower than the capacity, you can select more folders.

Otherwise, copy the selection to your memory stick by either:
Right clicking on a selected folder and clicking “Send To” and selecting the Memory Stick.
Right-click a selected folder, click “Copy” then browse to the memory stick and right-click and paste.

To restore the allocated letter for your drive, click the ‘Change Backup Drive Letter’ icon on the desktop, or click “Start > Run” and type “diskmgmt.msc” and click “Ok”.

Locate your Backup drive in the list, right-click it and then click “Change Drive Letter and Paths…”

Click the “Change” Button

From the list, select the letter that the drive is supposed to have.

Click “Ok”, and if asked if you’re sure click “Yes”.

Close all windows that you’ve opened for this tutorial, and you are done.