QUOTE(lalilulelo @ May 16 2015, 09:59 AM)
Guys. Need a bit of help here. My mariokart 8 disc suddenly can't be read. Even after cleaning also cant read, but my sm3dworld even if dirty can be read. Is there a problem?
found some guy post a solution here
http://techforums.nintendo.com/thread/36547try it and goodluck!
1. Removed MK8 disc from drive
2. Go into your storage management and delete ALL MK8 files (DLC, Mercedes pack, Update, Shared, Save data) - you are going to lose all your tracks and things you've earned so be warned.
3. Turn off the Wii U
4. Unplug the Wii U from the power (I left it unplugged for over 24 hours as the first time I tried unplugging it for 10 minutes it did not work).
5. Plug the Wii U back in
6. Check to see if there are MK8 files in your storage management
7. Put MK8 disc back in the drive
8. Select MK8
9. Let the auto-update run and see if the game plays now (this is the part I could never get to until I left it unplugged for over 24 hours after erasing the data)
10. If it plays go ahead and exit out and you should see MK8 data in storage management now (Update, Shared, Save data)
11. Download DLC and let it update. I stood beside it the whole time to make sure it didn't somehow shut off/sleep.
12. See if the game plays now and the new DLC is there
13. Exit game
14. Download Mercedes DLC (if you had it) and let it update
15. Play game if it is working and get all those tracks/racers back that you lost.