Is your 2012 MacBook Air's drive on the fritz? You may be eligible to have it exchanged under Apple's new Flash Storage Drive Replacement Program.According to Apple's support document, if you own a previous-generation MacBook Air (sold from June 2012 through June 2013) with a 64GB or 128GB solid-state drive, you may have received a faulty storage unit. Thankfully, you don't have to trek down to an Apple Store to have your drive tested--you can do it right from your computer.If you have a potentially-affected device, visit the Mac App Store's Updates pane and download MacBook Air Flash Storage Firmware Update 1.1. That will run a test of your drive; if it comes up faulty, then it's time to make an appointment with your resident Apple Store or Authorized Service Provider, or call