Windows uses .000 files to store data that helps you search for files quickly. These are system files and should generally not be moved or manually opened.
Software like Virtual CD or Linux imaging tools (like PING) use .000 as a format for disc images or drive backups. Download 000 zip
If you find a folder named FOUND.000 on your hard drive, it contains .CHK files—fragments of data recovered by the Windows Check Disk (chkdsk) tool after a system crash. 2. How to "Open" or "Extract" These Files Windows uses