This ISO basically contains the game files, and no blank space to fill it to the standard size. Using software, it is possible to WIPE an ISO, meaning to take the 1.35GB and to shrink it by removing all the 'garbage bytes', and just be left with a WIPED ISO. Since this is the case, the remaining space in the ISO is known as 'garbage bytes', and are empty for the purpose of filling up the ISO to make it the standard size.
#How to chnage a gcm to iso Pc#
Thus, the only way to make images of GameCube games is to use very select PC DVD drives capable of reading the media, or connecting your PC to the GameCube with the GameCube BroadBand Adaptor Modem and streaming the image file to your PC Hard Disk.Ī GameCube image has either the filename extension GCM or ISO.Īlthough the ISO is a standard of 1.35GB, the game contents may actually be less than that. The GameCube, however, starts by reading the outside, and has its last sector on the inside. A conventional disc has its data burn from the inside of the disc, and has its last sector on the outside of the disc. The GameCube has a special way of reading the data on their Mini-DVDs which makes it impossible to read in a standard PC DVD drive. The GameCube is unlikely to read, even a homemade disc, that is less than about 700MB-800MB big. The reason it is this big is because the GameCube is designed to read a disc that is full, for easy access. A standard size of a GameCube image (or known as ISO here) is 1,459,978,240 bytes big.