External hard drive filesystem to use for both pc and mac

hi everyone,
i've got a 120 gig portable WD passport harddrive that i'm planning on using to move files between my pc and macbook.
it is recognized fine on both and I am able to copy files to my macbook but cannot write files to it, i'm assuming it has to do with the file system it's using (not sure what it is off hand bought it used and preformated)
any suggestions on how to get it working on both platforms?

Important Note: Reformatting a HD will overwrite all existing files.
Before attempting Reformat,Be sure to Back-up important files to another HD,iPod,CD or DVD.
Jim
PowerBook G3 500 Mhz "Pismo"/ 2.0Ghz BlackBook 2GB OWC RAM   Mac OS X (10.4.9)  

Similar Messages

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    Launch the Terminal application in any of the following ways:
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    ☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.
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  • When ever the power goes out or I restart my iMac the external hard drive that is used by Time Machine for backups is dismounted ?

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  • Which external hard drive should I use to save my iTunes library?

    Hi,
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  • I have an external hard drive that was formatted by a PC and has files and directories etc. I want to format it and use it on my IMAC for backup but I can't seem to write to it nor can I delete current content. How do I initialize it for use with the MAC?

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  • HT1751 Hi.        I want to transfer my iTunes library from my pc to either my new MacBook Air or ideally to an external hard drive that I use as a backup for my Air. I would want to be able to sync the iPod with the library on the hard drive. I

    Hi there
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