Comment on Testing DVD-R and CD-R 25 years later: optical disks from JapanparentComments−Dwedit1yCan a CD-R drive force a second pass burning over existing data to make the disc unusable? Perhaps with drive firmware modification.−rasz1yAfaik you can "erase" contents of a disk with open session. Data is still there just invisible without specialized tools, enough to fool non nerds.−dist-epoch1yIt would be safer to use a read-only drive when reading back the backups.
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Can a CD-R drive force a second pass burning over existing data to make the disc unusable? Perhaps with drive firmware modification.
Afaik you can "erase" contents of a disk with open session. Data is still there just invisible without specialized tools, enough to fool non nerds.
It would be safer to use a read-only drive when reading back the backups.