Macbook Air could not unmount disk is such an cumbersome issue that mainly arises during the use of disk utility for unmount partition. Due to this you are inhibited in order to unmount the Mac volume. But fortunately it is might be possible to overcome from this devastating situation. Most usually this type of circumstance would appear whenever file in certain particular partition is being used indeed. In order to resolve Macbook Air could not unmount disk problem user would try to relaunch finder application by using control+option+clicking in the finder icon of Dock and then choosing relaunch option. Unmount the partition by selecting it in the disk utility after that click the unmount from tool-bar. This way you can resolve Macbook Air could not unmount disk. But attempting these steps certainly required sound technical knowledge and any sort of fault while attempting this above measures could even results in deletion of precious file as well. The condition would be more panic if that lost file has no available backup and you may face data loss after resolving Macbook Air could not unmount disk. but do not fret because Mac Data Recovery here comes for rescue. This tool enables you to regain the access of missing data successfully.