I've checked the Macrumors upgrade guide as well as BlackMacBook.com's, and both are in agreement as to the hard drive upgrade procedure. Neither of them mentioned whether replacement 2.5" disks come with a white plastic tab. If off-the-shelf 2.5" disks do not, in fact, come with them, how could they be removed? I'll probably get a slightly smaller hard drive from Apple if I know I could safely upgrade it later. Thanks!