No. The slot-loading drives on all current iMac models (and most previous iMac models) will only accept standard 12cm (120mm) diameter discs. Smaller discs may (and usually do) cause problems with the drive, up to and including complete drive failure. Smaller discs require tray-loading optical drives; the only iMac models that included tray-loading optical drives were the early iMac G3 (CRT) models, and the iMac G4 ("Sunflower," or "Desk Lamp" style) models.
No it will not play a 6" disc. It will play a CD or DVD.
It is not possible to convert a DVD into an iMac.
Most DvD players and TVs sold in PAL countries can play both format of discs
Burn it to a DVD.
Yes, it does.
You will need to save the pictures on a flash drive, CD, or DVD, in order to load them on an iMac.
No, the iMac will not play a Blueray disc.
Yes
Because you burned them in the wrong format or you did not finalize the project. This must be done in iDVD and not in iPhoto.
No. You can only play games made for Mac OS on an iMac.
5m 80mm
80mm = 0.087489064yds