Hello, Yesterday I made a partition and cloned my Snow Leopard in order to see if Lion worked with the software I have. I then booted to my "backup Snow Leopard" partition and upgraded to Lion but for some reason I'm stuck with spinning wheel for hours when doing the first restart. According from the install.log it seems that the install (upgrade) was done properly. 30 seconds after finishing the installation I restart and in verbose mode I get this log (sorry for the lousy quality, with was taken with my mobile). I've tried everything. Repaired permissions, disk. Resetting PRAM, NVRAM, SMC. I even left the MBP all night in this process to see if there was any progress. No luck. Tried to enter safe mode but I only get a black screen and a new restart. (Something like PRAM) What could be causing this? In the past when I installed Snow Leopard (10.6) I had some issues with my firewire (they stopped working a few months ago). I needed to boot to safe mode in order to finish the install of SL and remove these files from /System/Library/Extensions IOFireWireSerialBusProtocolTransport.kext IOFireWireAVC.kext IOFireWireFamily.kext IOFireWireIP.kext IOFireWireSBP2.kext Rebooting with this change shows that everything works properly (besides the dead firewire ports). I don't know if the "spinning wheel" has something to do with my FireWire or Airport (which works fine in SL).. since it got stucked in there when I look through verbose mode.