Now i have extracted the boot sector to a file the orginal file name was .bif i renamed it to UBCD.DAT Where should i put the file ? What changes would i have to make with that file? Next step i have also problems on. i have downloaded the file UBCD.ZIP and extracted it now im sitting with the hex editor and i cant find the line /CDSH the only line in the file with / is /boot Please help me.