I've just installed a Crucial M4 512GB SSD into my MBP and have a couple of questions regarding setting up in Lion. I have taken the old 500GB Seagate that came with the MBP originally and put it into an enclosure to use as an external drive. I would like to use this for Time Machine and also would like to offload folders with large files onto it e.g. Movies and Pictures. Do I need to create a partition on the external drive to separate the space for Time Machine from Movies etc.? (sorry if this a stupid question) Secondly how can I link to the folders on the external drive in Finder i.e. I want the Movies icon in the Finder sidebar to point to the Movies folder on the external. Lastly, to TRIM or not to TRIM? I occasionally do photo editing so not sure if TRIM is really needed as I don't think I'll be writing and deleting GBs of data everyday and I know it's not supported for 3rd party drives on Lion but can be hacked. There is no mention of TRIM on Crucial's own forums so would appreciate your opinions please.