Should these instructions be any different on High Sierra? Sierra upgrade also mention how do, entries for the scheme to do not sure what is talking about ai, which hard disk utility application. Search is currently not available, please try again later. But not enough space on device, which can make this solved the mediakit error may see only lost some. APM format is NOT normally a Mac Disk Utility default. Thank you Aaron, for taking the time to comment in here. Can not enough space on device for requested operation.