If you edit pictures on a flash drive or c d is the change permanent?

When you edit pictures on a flash drive or CD, the changes are only permanent if you save the edited version back to the same drive. If you simply open the image from the flash drive or CD and make changes without saving, the original file remains unchanged. However, keep in mind that CDs, particularly rewritable ones (CD-RWs), allow for modifications, while standard CDs (CD-Rs) do not. Always ensure to save your edits to avoid losing any changes.