SoundkeepInspect a scratched CD under angled light before cleaning or playing it. Light reading-side marks may justify conservative cleaning and a test in a known-good drive. Cracks, layer separation, center-hole damage, or missing label-side material are reasons to stop.
Begin with the least aggressive CD cleaning method only if dirt is present. Because the data layer of a CD lies close to the top surface, review our label-side damage guide before treating a mark as cosmetic.
Classify the damage before choosing an action
Fine reading-side scuff, no crack, no lifted layer, disc lies flat.
Repeated read errors, deeper radial scratch, pinholes, or uncertain recordable media.
Crack, damaged hub, warping, delamination, or material missing from the label side.
Tell contamination from a scratch
A fingerprint changes appearance as the disc tilts and may have a soft edge. A scratch remains a defined line. Loose particles should be removed before wiping so they are not dragged across the polycarbonate.
Do not use a fingernail to test depth. Handle the disc by its edge and center hole, and never flex it to make a mark easier to see.
Read the direction and location of the mark
NIST recommends wiping from the center toward the edge rather than in a circular direction. The same geometry helps when describing damage: note whether the scratch runs radially, follows the circular data path, crosses the outer edge, or reaches the center ring.
Location does not let a home user guarantee readability. It helps document the problem and decide whether immediate copying is more valuable than repeated playback tests.
Use a known-good drive for a limited test
If the disc is flat, uncracked, and clean, test it in maintained equipment using the normal loading method. Do not keep retrying a disc that creates severe vibration, unusual noise, or repeated seeking.
An audio disc should be checked at more than the first track. A data disc should have its folders copied and representative files opened. For home-burned media, follow the verification and backup steps in our CD-R and DVD-R preservation guide.
Understand what resurfacing changes
Resurfacing removes or reshapes material on the reading side. It is not ordinary cleaning, does not repair label-side data loss, and cannot make a cracked disc structurally safe. Results depend on the disc construction, damage, and equipment.
For commercially replaceable media, replacement may be more sensible than an irreversible treatment. For unique content, consult a preservation service before experimenting.
Protect content that still reads
Make an authorized copy to managed storage, verify the result, and keep another independent copy. Record the source disc, date, drive, errors, and any tracks or files that could not be recovered.
Return a stable original to a clean case and store it upright. Do not attach a note to the disc surface; place documentation in the case or collection inventory.
Retire the disc from normal use when
- A crack reaches outward from the center hole or edge.
- The disc is warped or separates into layers.
- The label side flakes, lifts, or has missing reflective material.
- Multiple maintained drives cannot read important content.
- Playback creates vibration or abnormal mechanical noise.
Record the failure pattern before changing the disc
Write down which track, folder, or time position fails, which drive was used, and whether the error repeats. One consistent failure on the same disc suggests a different problem from several clean discs failing in one player. This small record prevents endless retesting and helps a recovery service understand what has already happened.
Do not confuse a drive that eventually reads the directory with a verified recovery. Open representative files or listen beyond the damaged point, compare copied file counts, and retain any error report. If a unique disc becomes readable after one careful attempt, copy it before trying to improve its appearance.
Keep the damaged original after a successful transfer unless it presents a contamination or structural hazard. The original label, packaging, and recording sequence may retain context that a copied folder does not.