I use Mac OS X 10.6.8. I have a brand new external portable hard disk, a Seagate 1 TB, formatted as NTFS. I want to use it as backup drive for Time Machine.
When I open Time Machine, it does not show my hard disk as an option that can be used for backup. Do I have to format my HD to some other type like FAT or EXTENDED? Do I need to download some software for making my HD work as backup disk?
Once it becomes my backup disk, can I use it for storing my other data from Windows or Mac too?
I read about using HFS+ formatted drives, but my Disk Utility does not show that option.