Internal updating music library
If you’re wanting to go the USB flash drive route with a portable Mac (or PC), it’s best to use one of the tiny USB flash drives like the one shown above, they are cheap, incredibly small, and offer plenty of storage for most music libraries.
Many flash drives are so small these days that they are barely noticeable when connected to a portable computer, often just a little nub sticking off the side of a USB port.
Time to Move your Serato library to your new portable drive. You have bought your new drive, backed up your music to a different drive, and moved your music via i Tunes to the new portable drive you plan on gigging with. Ok, now its time to move your Scratch Live Library to your new drive without losing any cue points, loops or crates, etc. The file names will still be there, they just wont know where the file is. If you stuck with your method of organizing your files, or have always used i Tunes' organization then your crates will transfer over with no problem at all. If you are asked to replace files while you copy, select "yes to all" and hit "Replace".
click to read more: Note: if you are new to i Tunes organizing your music and have lots of SSL crates, then you will most likely lose your crates and will need to re-build them. Don't just go strait into your drive and do this though. It does not matter, as long as it copies everything.
Consolidating copies any files that were outside of your i Tunes Media folder into your i Tunes Media folder.
To save space on your hard drive, you might want to delete the original files after you make sure that the copies are in your i Tunes Media Folder.
If you don't do this step, Serato will read from both your internal and portable, essentially doubling up every file you have in Serato. As an important note: The next time you open Searto, it will automatically put a "Scratch Live" folder back on your internal drive. All the info going forward will now be saved to the portable drive. Now that you moved everything, you need to update Serato on where all your files went! Serato will now relocating all of the files and associate these file all to the portable drive. This will probably take some time for serato to rebuild the library. You could rescan your ID3 tags too, but its not necessary at this time.There are plenty of reasons why you’d want to move an i Tunes library to an external disk or USB flash drive, but owners of computers with limited drive space may find this particularly useful.