I think I have got this problem resolved after moving the burner from the ata-card to the ide-pri-slave & slaving the drive off the c:drive it still made coasters so I put it as master on the ide-sec-master same problem then tried ide-sec-slave no difference so I started doing lots of research on the web and have come to the conclusion that the btc1008im burner>> in the dvd-burning part for most people is not capable of burning faster then 2.4x after reading threw lots of posts from different people with the same problem I found one common ground burning speeds. Unlike the others that just gave up and junked the drive and moved on to another brand I decided to figure out why this is As it turns out I have personally found out that my BTC-1008IM is not capable of burning dvd media faster then 2.4x first off I came across a post about using dvd decrypter to burn dvdÃ¢â‚¬â„¢s but they have to be made into a iso or nrg file. Shrink DVD and DVD decrypter both will do this for you. Now back to how I determined my drive will not burn faster then 2.4x is with DVD decrypter I was able to set my burning speeds slower then the disk rating wear, as Nero will not let me. I started with 2x then 2.4x and all burnt good till I got to 4x the DVD burnt till 22% then quit. To make a long story short I no longer use Nero to burn dvdÃ¢â‚¬â„¢s I now use dvd decrypter set at 2.4x and have burnt over 15-dvdÃ¢â‚¬â„¢s and counting with no more coasters. The only bummer is that it takes 25 to 30-min to burn a dvd the other bummer is I paid for a drive that is suppose to be a 8x burner I guess the moral of the story hear is you get what you pay for the drive only cost me $70:00usa eventually I will save enough and upgrade to a lite-on 8x dvd burner till then I will just keep poking along with this drive and get my moneys worth out of it.
Some links with complaints about BTC 1008im drives