How to Share an External Drive Between a Mac and a PC
23.05.12
Windows prefers to use NTFS (which stands for New Technology File System, though it has been around for nearly 20 years now). Macs running Snow Leopard or Lion can read from drives formatted as NTFS, but they can't write to such drives unless you install a third-party driver or muck about in the Terminal. Conversely, Windows 7 can't read and write to drives formatted as HFS+--also known as Mac OS Extended (journaled)--unless you install third-party software such as Paragon's . Formatting From a Mac
To format a drive as FAT32 from a Mac, follow these simple steps.
1. Set up your drive following the manufacturer's instructions. Connect the power supply (if necessary), connect to the Mac via USB or FireWire, and turn on the drive. The drive should automatically mount on your Mac's desktop (if the finder preferences are set to show external drives). If the drive is not formatted, you may get a message saying that the drive is unreadable by Mac OS X and asking you whether you
Source: PCWorld