A 'You need to allow ScanSnap Home to access all data in the disk.' Message Is Displayed (Mac OS) A Message Is Displayed, Indicating That You Do Not Have Access Permission for a Folder or File or a Message Is Displayed Prompting You to Check Whether Access Permission for a File or Folder Has Been Set (Mac OS) Wiped MacBook Air, can’t reinstall Lion (temporarily offline error) I had a 2011 Air lying around which I wanted to give away. The first one involves repairing the installation volume’s permissions using Disk Utility. According to CNET, there may be a few ways to reinstall OS X on your new Mac computer. This means that your Mac will continue to run on Mac OS X (Journaled) and Windows will be able to run on NTFS. Partitioning splits your hard drive into 2 separate sections, each with its own format. Macs run on Mac OS X (Journaled) and Windows runs on NTFS. Well the reason is that Windows and Mac don’t run on the same format.