Hi to everyone having this 0x80020063 come up when your trying to use your "supper" ! drive.
I've had all the issues your all talking about with my 27" iMac on and off for some time.
Some brands media will work some will not!
Anything i slot in wont work!
Slow speeds seem to help for a while then don't etc, etc, etc.....
Drove me crazy for some time especially as Apple seem in complete denial of having any such problems! I've had macs from the LC II "1993", Performa 475s etc, all the way up to the modern units we use now and macintosh I'me sad to say have always had this attitude towards there customers so no surprise there for me!
I can't speak for other units other than the ones i own myself so I restrict this to iMac under i3, i5 and i7 processors, iBook G4, Powermac G4 and Mac Book Pro i5.
All have there own little niggles like all machines but the two i would pick out for this particular issue would be the modern upright iMacs and the much older G4s. these Macs are DUST machines sucking in and over heated DUST HOOVERS. Don't get the idea I'me dishing them there great machines but a design fault of both is sucking in dust. I would have to open the G4 up every 6 months or so and literally take the hoover to it to get all the overheated dust from inside it.
The iMac is a real problem in that its a sealed unit and so your stuffed in trying to do anything to solve this problem. My lovely 27" screen is slowly getting darker and darker as the dust monster fills up and leeks dust into the corners turning it a dull brown " burnt Dust" colour and its not just the screen that suffers from this, the CD, DVD read and especially burn features get a good liberal soaking in the stuff.
As soon as i get a hint of none reading or none recognition of a disc out comes my lens cleaning disc and as i've said this unit is enclosed so swabbing is impossible so i use a WET disc system then once this has finished i then leave it to dry off and repeat this with a dry cleaning disc. This works relay well and the issues i once had have all gone.
Apple your Disc Drives are not sealed properly as is your iMac screens !!!!
Problem solved. All brands and speeds work fine and no error 0x80020063 which just means "media" issues. Very misleading error message.