Using External HD’s on Mac & Windows

When using an External HD on a Mac & Windows computer you may run into problems. Here is a guide to demonstrate what formats work best for your drive depending on your situation.

Operating System Windows (NTFS) Mac OS Extended (HFS+) FAT32*
Windows Read & Write Read Only Read & Write
Mac OS X Read Only Read & Write Read & Write
Access Type
Action Read Only Read & Write
Move from External HD to Computer No Yes
Copy from External HD to Computer Yes Yes
Add, Modify or Delete data from the External HD No Yes

*FAT32 cannot handle files larger than 4GB.

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