[Tfug] CDs: no medium found, DVDs work (sometimes)

[Zack Williams]

> I can rule out hardware for 2 reasons: all three systems consistently
> fail to read CDs. DVD's seem to mount ok 'sometimes' - maybe 1/2-2/3
> of the time.

DVD's and CD's have a different focal length to the disk from the read
head, so it's quite possible that a drive will be able to read one but
not the other.   This is relatively common - I think you have bad
drives.

Not worth spending the time to debug when you can buy a replacement for <$30.

- Zack