You can use Puppy Linux to copy data to a USB flash or external drive. Download the Tahrpup iso here. Burn the iso and boot the disk. If this was a Windows 8 computer upgraded to 10 then you will need to disable SecureBoot in UEFI/BIOS and possibly enable Legacy Boot.
When you boot Puppy linux you will see your hard drive partitions labeled sda1...sda2...sda3 in the lower left desktop. For Windows 10 the Windows partition may be sda3. Click once on the icon and the partition will mount and a File Manager will open. If you do not see your Windows files then close the File Manager and click on another sdaX partition until you see your files/folders. Attach your USB flash drive or external drive. A USB icon will appear on the desktop next to the optical driver icon. Click once on the USB icon and another File Manager window will open. Drag and size the two windows until they are side by side. You can select files by Left Clicking while holding the Ctrl key. You can also left-click and window around the files/folders you want to copy. With puppy you only need to click once on a folder to open it. Drag your highlighted files from the sdaX window to the USB window. A small dialog window will appear. Select Copy and check the Quiet box.
Edit: Puppy runs in RAM and off the CD. Nothing is written to the hard drive.
Edited by JohnC_21, 10 January 2016 - 06:38 PM.