Hi , i would add that search in auto mode will only search those files that are indexed - you can add drive J by going into index options > modify : check J
Alternatively I believe you can execute a manual search by manually navigating to the J drive , with the subject entered into the filter field as described by dnmcleod
however i do not know whether once again the drive needs to be previously indexed
There's a program called Agent Ransack that makes searching your computer easy. It's the freeware version of the more fully featured shareware program File Locator Pro, but it still beats any built-in Windows search function hands down. It's available in both 32 and 64 bit versions.