With TOS 6’s excellent hard disk recognition function, neither Startup/Shutdown nor hard disk reformatting is needed. Users can hot swap the hard disk of any supported file system at any time, and directly access data in that hard disk without reformatting. This functionality is supported across multiple file systems, including EXT3, EXT4, BTRFS, NTFS, FAT32, exFAT and HFS+. (Note: There should be at least one system disk in the TOS system).