Combo Drive reads only DVDs

By saif
Apr 19, 2007
  1. I have an LG HL-DT-ST 4521B Combo Drive that reads DVDs and burns CDs. I had not used the drive for quite a while. Then, I tried to burn a CD, but when I click burn in nero, it asks me to insert a CD, even though one is already there. However, it reads all my DVDs. It does not read even new scratch less CDs no matter they are blank or full. Is there a solution to my problem?
  2. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,689   +395

    Can you boot off a cd in that drive? If not its a hardware issue (since it works with dvds, I doubt its a cable issue) and the drive is dead or at least that part. If it does boot, you've got a software conflict in Windows, good luck.
  3. raybay

    raybay TS Evangelist Posts: 7,241   +9

    That drive has two lasers. It lasts about a year. You can experience it working on some components and not on others, just as you describe.
    Sometimes the belt on the bottom of the unit has slipped off... and can be replaced by removing the four screws and the cover plate.
    But a replacement is available from Wal-Mart, Costco, Sams Club, Best Buy, and Circut City for $44 or so... and even cheaper online at,, and many others.
  4. saif

    saif TS Rookie Topic Starter Posts: 48

    Thank you for your replies, but I had Ubuntu installed few months back, and I remember CDs not being read in it either, so it should be a hardware problem.
  5. hxblitz

    hxblitz TS Rookie

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