Mac & Windows Compatible File System & Drive?

Helping a friend get her data off and old Mac and shifting it to a new Pc. Did some research and in the end got this Seagate drive because of good reviews but also because it says on the site: "NTFS driver for Mac pre-loaded on drive".

Quite disappointingly and to my surprise the drive did not work out of the box with the Mac OS X Version 10.5.8 Build 9L31a, 2.13 GHz, Intel Core 2 Duo, 2 GB 1067 MHz DDR3. Plugged it in the "new" Pc, a Lenovo T420 laptop, and it had read and write access without a flaw. This was also somewhat embarrassing for me since I said it would work out of the box, relying on what Seagate advertised.

After a bit of back and forth she unplugged the drive she uses for connecting to the TV where she uploads movies from the old Mac but also from another friends HP/Pc laptop. There she said she can save movies from both boxes with out any issues.

As a test we plugged it into the old Mac and it did read it perfectly fine, then in the T420 and bang that worked 100% as well and this was an old old little Samsung drive. It is the Samsung S2 Portable 320GB HXMU032DA/G3. Kinda funny that this worked out but the brand new freshly ordered and unboxed Seagate Backup Plus Portable 1TB drive did NOT work.

Now I would like to make this new Seagate drive compatible between Mac and Windows as well.

What do I need to know and where do I start? I assume I need some sort of driver?

Thank you for any help with this.

Best Regards

 

This may be of help: http://www.paragon-software.com/home/ntfs-mac/index.html.

 

Does this include downwards compatibility with Mac OS X Version 10.5.8? Might be that the issue with the Seagate drive is that the Mac is version 10.5.8.