I doubt this would be any faster if you haven't taken the book apart already and swapped drives. So you could make a bootable flash drive with like Ubuntu Linux format it in FAT instead of NTSF and then it might be recognized. Hold down the "Option" key on your MacBook and you will get little icons of the drives you can boot from. You would just select the USB drive you want to boot from and you're good to go. Most of the info is second hand hope it helps/works. Good Luck!
It’s not possible water damage, it is water damage. If you tried to use it, or plug it into the wall it is most likely beyond repair unless you replace the effected parts. It never hurts to try putting it in a zip lock bag with some of those silica packets you get in shoes. There is actually a kit you can buy from silica gel packets.com called the "iRecovery Cell Phone Drying Kit" I have never used their products before but it is the same stuff just more of it and it hasn't been used before. I have used the packets from other products and it has worked for me. Good luck hope it works out.