Data recovery FAQ: answers to your questions
Find answers from our specialists to the most frequently asked questions about data recovery: hard drive failures, SSD, RAID, USB drives, pricing, turnaround times and process. SOS Data Recovery (Tesweb SA), Swiss specialist since 2006 with over 10,000 cases handled, answers your questions.
Why consult our data recovery FAQ?
Our technicians answer the most frequently asked questions about hard drive, SSD, RAID, NAS, USB drive and memory card failures. Each answer is based on over 10,000 cases handled since 2006 and regularly updated. If you cannot find the answer to your question, contact us — free diagnosis within 3 hours.
Broken CD/DVD: What to do to recover your data?
Symptoms of a physically broken CD/DVD
A broken CD/DVD is an optical disc whose physical integrity is compromised, making standard reading impossible. If your CD/DVD is physically broken, do not attempt to glue the pieces back together: this action risks permanently preventing any data recovery. Likewise, do not solder the fragments together and do not try to read the disc by taping the pieces together — these attempts irreparably worsen the damage.
Why are these actions dangerous?
Any incorrect handling of a broken disc can destroy the reflective layer where the data is engraved, reducing the chances of recovery to zero, even by a professional.
CD/DVD Difficult to Access
Symptoms
A CD/DVD that is difficult to access is an optical disc that your computer cannot read correctly, either due to physical degradation of the disc surface or failure of the optical drive itself. According to data from the Library of Congress, a CD/DVD can degrade in 2 to 25 years depending on storage conditions.
Main Causes
- Degradation of the disc surface: scratches, oxidation, or delamination of the reflective layer
- Optical drive failure: worn laser, dirty lens, or defective mechanics
- Format incompatibility: the drive does not support the recorded format (DVD-R, DVD+R, etc.)
If you encounter a problem with your CD/DVD, do not perform the following actions:
A faulty CD/DVD can present two types of failure: physical (scratches, deposits, delamination) or software (data corruption, burning error). In both cases, any non-professional handling increases the risk of permanent data loss. According to our data recovery specialists, each attempt at amateur repair reduces the chances of subsequent recovery by a professional by 30 to 60%.
Scratched CD/DVD
Symptoms
A scratched CD/DVD is an optical disc whose reading surface is damaged by scratches, compromising the drive's ability to read the data correctly. It is essential not to cause further scratches: stop using your CD/DVD immediately and gently remove it from the drive.