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I'm posting this here as I am at the end of my rope with trying to diagnose this issue. I have 23 original Xbox's and this fault ONLY happens on hard modded systems that have the Samsung DVD drive (both the SDG-605B and SDG-605F). I will give a little information first on the type of hard mods I performed to each of the systems(they are all identical). modchip: Xblast Jafar/Aladdin ide wire: 40 pin 80 wire 24" long ide to sata: startech adapter(set to master) hdd: 3tb wd red pro or 4tb hgst ultrastar RAM: stock 64mb(1.6 models and 2 1.4s) or 128mb upgrade(all other models) console capacitors: all replaced on both the motherboard and PSU with Panasonic FM(mouser) or Nichicon (console5 kit) DVD drive caps: all replaced on Samsung drives only BIOS: Cerbios 2.3.1 UDMA5 (tried UDMA2 did not help) Xbox motherboard revision: I have all revisions from 1.0 to 1.6b The issue I am having is that XBMC4Gamers gives the DVD "Busy" signal when I try to boot a game(game is brand new, no scratches), and the stock 5960 dashboard will just give a disc read error. The error can be fixed by simply rebooting the console into xblast OS then loading cerbios from there. Once the console boots again the game reads fine first try and works without stutters(the lasers are fine). The issue will happen again if the xbox is turned off then unplugged and allowed to sit a bit. If I turn it on again using the power button (instead of using disc button to boot to xblast first) the issue will happen again until I go back into xblast and reboot the bios. Also, the game will boot if I have the disc in the drive when first turning on the console. It only doesn't work when trying to insert it after reaching the dashboard (stock or xbmc). This issue only happens on the samsung drives. I have many thomson, philips and even 1 hitachi drive and the issue does not happen there. On first boot with these drives, the games always load first try without having to reboot the console. I can rotate these samsung drives between consoles and the issue follows them to whichever console I put them into. I am convinced that this is not a hardware issue because of this but some problem with either the BIOS or xbmc4gamers. I really hope someone can help me here as I have no idea what the issue can be and troubleshooting this had led me nowhere so far.