thanks Denis ,but now Im a little more confused
firstly I read Your presets dissapeared? but am only a little wiser with my mac,and still wonder if /how to stop 8 extra folders being created for each folda I create
then what does "having the same drive letter" actually mean
Im not again too sure of : Import a dummy image from the external to make it visible to Lightroom if needed then delete that image from both Lightroom and the disk
I know these things are easy when you know how and perhaps Im just lacking confidence they just need more clarification for me to get without screwing somthing up
also all my original files are already on other hard drives so it is just the ircat preview data thats getting to big
any help apprieciated
cheers J