Sorry - me again. I have done a search and can't find the asnwer so am posting a thread. I asked yesterday about my concern at not having enough disk space on my 120GB MBP. And got some great replies that have put my mind at ease. But I was wondering if I do get an external hard drive to back up all my photos and music and media does the spotlight and search/find function still work on an external drive? Spotlight is such a brilliant tool and I know it catalogues your hard drive every time a change is made - does it do this on an external drive? Also, I've heard that time machine on Leopard will mean that even if your hard drive fails you can still renew your data on to a new drive - does this mean that a back up hard drive will be a thing of the past with Leopard? Anyone know about these issues?