Originally posted by Black Diamond
Metal Slug doesn’t have any protection.
You cannot copy a damaged cd and expect it to work.
Whilst this is generally good advice, there is a method that I’ve used in the past to copy unprotected but damaged psx cds with good results. In fact, on some occasions, I’ve been able to produce a working copy from a copy that has been so badly damaged that it no longer works (yes my kids and, particularly, their m8s are very hard on psx cds).
This is the method that I use:
Make an image of the damaged psx cd with discdump in standard mode. Note that depending on the extent of the damage this will almost certainly take a long time. You’ll need to be patient and don’t be surprised if it dumps say 93% of the image in 2 to 3 mins and then takes an hour to do the next 3% before taking only a few seconds to complete. The image making process will slow down drastically whenever it reaches a damaged area.
Once discdump has finally completed its job, it’s time to burn the image and the best program to use for this is firebuner but, if you don’t have fireburner, you can use the freeware burnatonce to achieve similar results.
Note that you must use a cdr as cdrws don’t work in psx consoles and you should use the best quality media that you can afford.
If using fireburner, burn the image using session-at-once (i.e. cooked) which will repair the damaged sectors of the image (do not use dao16 or dao96 as raw burning will merely duplicate the damaged sectors and that defeats the purpose of the exercise). You should also burn at low speed (e.g. 8x or even 4x if your writer can burn a cdr that slowly). It’s also a good idea to check the auto-correct sub-channel data and auto-correct edc/ecc options for the burn too.
The burnt cd will then be undamaged and fully readable. If the original was still working, the copy will work (often better than the damaged original). If the original was no longer working, it may well be that your copy will work though, of course, there are no guarantees in that case.
If using burnatonce, make sure that you burn with the “Use raw driver” option in the device settings unchecked and again burn at low speed. I’ve had good results with that method too.