What unit do you have a mk3 or mk4 ?

The first thing you need to do is eject the cd.

option 1, press and hold the eject button until it pops out.
option 2, press the eject button as fast as you can repeatedly until it pops out.
option 3, take the drive out and remove the lid and manually eject the cd.

Replace back in car and plug in.

Make a OEM v32 OS disc, make it a mode2/form1 that way it works in both the mk3 and the mk4.

Insert into drive and pray, it will either work or not.

If it's bust, get one from ebay, it's a bit cheaper.

HTH

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.