• Reference & Education, K-12 Education
• MD1 file description
• June 23, 2026

An MD1 file is usually associated with a disc image, which is a digital copy of a CD, DVD, or similar optical disc. Instead of simply copying the visible files from a disc, a disc image can preserve the disc’s original structure, layout, file system, boot information, track details, and other technical data. This makes disc images useful for backing …