Would like to post my results with two brands of mini-DVDs on my XenoGC GameCube. It's POT was adjusted to 60 OHM from the guy I bought the drive from. Don't have a multimeter, so I'm not gonna open her up and adjust it.
First are the DealeXtreme cheapo ones on the dx website. Those seem to work 100% for me. Only coasters I ended up making were the result of my DVD burner having bad drivers installed. (caused it to mis-read the blank disc's capacities among other problems.) I just uninstalled the drivers and let windows reinstall them. I think Daemon tools SPTD driver just somehow caused the drive to act funky and uinstalling drivers and restarting Windows fixed it. No issues since.
My burner gives me limited speed options for burning mini-DVDs. So slowest speed I could burn them at was 3.3x and fastest was 4x. I used both and saw no difference on the GameCube. They both booted with no DREs:
Here's the specs as listed by Nero's Disc Info tool:
The MID: AML
Then I recently bought more mini-DVDs, but this time from my local Wal-Mart. (oh the horror!)
These ones were Sony brand and ran me about 12 bucks for a 3 pack. Which seemed expensive to me until after I opened them and discovered they were double sided. (had data tracks on both sides of the disc). These were intended for Cameras I guess. But since they were double sided, that meant having a total of 6 data tracks to use. So the 12 dollars didn't seem as expensive now. These I suppose would be great for any games that have more then one disc to them since with these you can just flip 'em over. I don't play/own any of games that use more then one disc, so I just burned a different game on the other side.
These seem to work great on my GameCube. Not one single coaster.
The MID is: 80SONY-R0
Manufacture is of coarse Sony. These were branded "HandyCam" and advertised to use something they called "AccuCore". Probably some patented dye type they use for the data track. What ever. They work great on my GameCube so I suppose that works as advertised.
My drive only lets me burn at 3.3x with these. Was no other available speed options.
I used this burner to burn my discs. It was a DVD burner Blu-Ray combo drive. It's a laptop drive and is in my desktop PC via a drive bay adapter. Pretty nifty.
I think the physical sticker says it's a Lite-On drive. But the driver info says it's an HP brand drive. (this drive only reads Blu-Ray, doesn't burn them much to my disappointment)
The model number of my drive is: HP DVDWBD TS-LB23L 0600
I have a second drive but it's a slot loader and it's mechanism doesn't support mini-discs. So no idea if it can burn GameCube discs. I have been able to burn Wii discs with it though. I don't use the full sized PC optical drives anymore. They don't have any that use the laptop style tray machenism and the slot loaders I did find were too expensive. I'm OCD about these and like having control over the tray once it's ejected. I did not enjoy having the drive try and pull it's tray back in when I'm in the middle of inserting/removing a disc. So I said to hell with it and got a drive adapter and put in some laptop sized drives in.