Today my external hard drive and my Windows partition stopped writing. Yesterday they worked fine. I'm running NTSF-3G and it does not even recognize the drives. My Windows partition will not show up anymore on my Mac side and came up with a read error upon restarting. Disk Utility recognizes the drives but will not let me verify or repair. Another bit of info.. the external hard drive is partitioned, one side is HFS+ for Time Machine and is working fine. What has gone wrong?