I am trying to back up files from my 2010 Macbook pro. I am using Target mode with another macbook (hooking mine up too the other and booting mine up in target mode to acess the files in my Macs hard drive from the other computer. I have my G drive 2 TB external hard drive hooked up to the other computer and when i try to copy the files from my computers HDD to the G drive it says "this file is read and write only" and wont copy the files. My computer wont boot up and ive got to get the files off it so i can put my new hard drive in and not loose everything. Please Help!!