News, info, and opinion by Mac users, for Mac users. Mac OS 7.5 on a Nintendo DS Posted Dec. 19, ’06, 7:38 AM PT by Derik DeLongCategory | Geekery Seriously, this has to be one of the best hacks I’ve seen in a while. Using Lazyone’s Mini vMac DS, you can run up to Mac OS 7.5.5 (really known as System 7.5.5 to those in the know). Sure, it’s black and white, you have to pan around, and you almost ca