text: can you help with my hard disk drive problem? my hdd is behaving harshly with me. when it is attached as a slave to other hdd it is working,ie,drives are accessible including the primary drive(c: drive), but as a primary it cant boot os.   "remove disks and other media. please press a key to restart" --- messege is popping up then after hitting a key- "disk boot failure....." --pops up.  i guess mbr may has been disturbed if it does,then tell me how to cope with it. i'm going to go out on a limb here and assume that you're running windows xp.    you can replace the boot record and repair the windows installation by using the repair feature of the install cd.   boot to the cd.  follow the setup and watch for the "repair console".    once in the repair console, type: chkdsk /fix  this will run a repair of the master boot record.   you may also need to repair your windows installation.  you can do this by booting to the cd, bypass the repair console, and then watch for the repair installation command.    the repair will replace all the corrupt files in your windows installation.