Hi, Sorry for my bad english, i'm french from Montreal. Today i had to stop speed disk (Norton systemworks v1) cause a coworker rush me to do some pdf. Result : my HD where is install my OSX.3 do not show on the desktop anymore. I run disk utility, it see the HD and did its routine with success but still the HD do not show. I try a clean install but the installer do no see the HD. I start the mac with an other OSX install on a FireWire, my extern drives mounted but not my HD. I try with techtools, it did its routine with success but do not fix the problem. Norton Doctor utility see the HD but cannot run the exam, it said a corruption prevents the task. Id like to try volume recovery but i never use it before. What should i dooi have important stuff on this HD that i dont want too loose. Help please!!!!