I've had the same problem with hardy alpha 5.
after some time, it falls under the busybox prompt.
(I had no problem with ubuntu 6.04)
There may be an interesting detail : I've got also a plextor DVDR PX-740A. (hda)
(motherboard asus a7n8x-e deluxe)
I managed to save some logs (dmesg, casper.log and /proc/ide/hda/*).
It may be useful.
Each time I did a cat /proc/ide/hda/capacity, I got some "hda: drive not ready for command" and a capacity of 25888529.
(it is strange that the copy of this file gave me 75043832).
Another strange thing:
the 1st time I did cat /proc/ide/hda/identify, there was only zeros, (and the hda not ready for command).
the other times I got something else (but always the hda not ready for command).
And finally, the DVD doesn't respond anymore, even after a reboot. I had to switch off the computer in order to make it work again.
I've had the same problem with hardy alpha 5.
after some time, it falls under the busybox prompt.
(I had no problem with ubuntu 6.04)
There may be an interesting detail : I've got also a plextor DVDR PX-740A. (hda)
(motherboard asus a7n8x-e deluxe)
I managed to save some logs (dmesg, casper.log and /proc/ide/hda/*).
It may be useful.
Each time I did a cat /proc/ide/ hda/capacity, I got some "hda: drive not ready for command" and a capacity of 25888529.
(it is strange that the copy of this file gave me 75043832).
Another strange thing: hda/identify, there was only zeros, (and the hda not ready for command).
the 1st time I did cat /proc/ide/
the other times I got something else (but always the hda not ready for command).
And finally, the DVD doesn't respond anymore, even after a reboot. I had to switch off the computer in order to make it work again.
I hope this can help solving the problem.