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Hi

As topic states

An Asus BW-16D1HT firmware 3.0 bought long time ago but it hardly ever gets used. I've burnt less than 10 discs in total and disc-read for maybe 15 hours of use total.

Today I had reasons to read/write CDR disc, but found that it wouldn't accept empty disc "no disc", I then proceeded trying other CDR and factory cd's, but none worked.

I went over to try DVDs and BLURAY discs, and they all seem to work fine.

I then went as far as bringing a CDR I know I did burn with this same device, and that CD works to this day in my cars cd player, but my Asus BW-16D1HT still won't read it.

I've seen some topics where the device stops reading blurays, or dvd's but not cd's.

I tried to disassemble the device to see if the laser lense was dirty, but I couldn't get my head around of how to disassemble it to get to the laser optics without breaking it. I know it's diffrent laser wavelength for diffrent type of media, but arent they all placed in the same optics, so if it was dirty to the point it can't read I should have problem reading any media?

Looking forward for answer
Thanks

There's usually two sets of optics. One is for CDs and DVDs and the other is for blu-rays and UHDs. For most people, when one of the lasers stops working, it'll work for CDs/DVDs and not blu-ray/UHD or vice versa.

MakeMKV won't read CDs. You have to use other software to read a CD.