Saturday Jan 08, 2011

How to use Seagate "Expansion" portable drive for both Windows and Mac

I just recently bought a Seagate "Expansion" portable drive (320GB). I was looking for a simple portable drive with no software involved, just to add/remove files. The requirement said "Windows" but you can actually use it for mac also. Just go to the applications/utilities folder and look for "Disk Utility". Select Erase and format to "MS-DOS (FAT)". After formatting, you can use this for both Windows and Mac. Keep in mind though, to backup the included files with the Seagate drive before formatting it. You might use it later. :)

(UPDATE Sept 21, 2012: Sometimes movie files reach up to 8GB. FAT file system has a maximum limit of 4GB per file. You get the point, right? This link would give you a way around it -




This was VERY helpful. Thank you so much! Almost panicked that I wouldn't be able to use it on both!

Posted by V on May 06, 2011 at 02:12 PM EDT #

Does this really work??? I just bought a Seagate Expansion Portable Drive and I really need to use it with both PC and Mac...... Thx

Posted by Fernando on July 26, 2011 at 01:47 PM EDT #

Helpful to a point but I dont have the MS-DOS (FAT) option. Only found the following: Mac OS Extended (journaled) Mac OS Extended Mac OS Extended (case-sensitive, journaled) Mac OS Extended (case-sensitive) MS-DOS File System UNIX File System Please can someone advise what to do to make this Seagate Expansion Portable Drive compatible for MAC and PC. Thankyou.

Posted by sarah harris on August 23, 2011 at 12:53 AM EDT #

Thank you very much for these instructions. Saved my day!

Posted by Johanna R on April 09, 2012 at 08:03 PM EDT #

Thanks so much for this! great help.

Posted by Katie on May 26, 2012 at 06:41 PM EDT #

thank you for the information!

Posted by erick aujero on May 28, 2012 at 12:16 AM EDT #

thank you!

Posted by sarah on August 09, 2012 at 09:35 AM EDT #

Honest review from non-techy person. This works perfectly and it's very simple. Thank you very much!

Posted by Beej on September 08, 2012 at 01:50 PM EDT #

Accept my sincere gratitude for your timely tip!!

Posted by Wiseking on September 13, 2012 at 10:22 AM EDT #

What is this use for? My mother bought this for me but she don't really know what is this use for. I thought this use to put the file that need too much spaces in and keep it in there. I wanna put music and games in but I can't, what I have to do?

Posted by Andre Croker on September 30, 2012 at 04:35 AM EDT #

Amazing. Thank you so much, made my day!

Posted by Janine on October 24, 2012 at 02:21 AM EDT #

Thank you

Posted by Dritan on January 16, 2013 at 08:13 AM EST #

Im about to do this to me hard drive... will everything be erased from it :s

Posted by Matthew on April 09, 2013 at 08:11 AM EDT #

Better solution... If your expansion drive is already formatted NTFS (which it likely is), then download the NTFS for mac driver here: Won't erase anything off your harddrive - will just allow you to use it now on your mac :)

Posted by Robbie on August 03, 2013 at 05:30 AM EDT #

I want to use on Mac, but I have a lot thinks into the Drive, can I still change without losing my documents ? Thanks

Posted by leo on August 03, 2013 at 06:12 PM EDT #

I have just brought a Seagate Expansion Desktop Drive for my Mini Mac 0SX which I was led to believe you just plug in and store files! Having plug in with the Seagate icon on screen I then click on to install. I am asked for an "application to start installation process but I do not know what application I should use! Do I download an "application" and if so which one as none of my existing applications do not seem to work. The installing instruction has no reference to which or what application is required! Can some kind person please help a non savvy Englishman!

Posted by Roy Salmon on September 01, 2013 at 05:38 AM EDT #

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