Ntfs external hard drives and fat32 4gb flash drive not able to unmount

Hi everyone,
     I have a bit of a headache here. I have two external hard drives, one is 1TB and the other is 500GB, both are NTFS format. I am using them on my macbook pro at this point because my windows 7 desktop appears to have crashed (still looking into the problem, just haven't had the time). I also have a 4GB flash drive that is fat32 format from that same windows desktop but I only use it for loading music on and putting it in the usb port of my stereo in my car. My problem at this point is that I am no longer able to unmount any of these by using disk utility. I was also having problems with both my external drives being read only until I came across Paragon ntfs for mac. That still messes up every now and then somehow and my drives go back to read only until I disable it and reboot, re-enable it and reboot again. Is there something that I am missing? I have been scouring the internet for last day or so trying anything and everthing to be able to get my ability to unmount disks back and nothing seems to work... Can anyone help?

Hi,
Following is the System Requirements from Western digital’s website.
Windows
Available USB port
Windows 2000/XP/Vista®
My Passport Essential 320GB USB 2.0 Hard Drives(WDMEB3200)
http://www.wdc.com/en/products/products.asp?driveid=426
Yes, generally speaking, if an external drive or flash drive can be recognized by Windows XP, it should work in Windows Server 2003. However, there is no guarantee.
If possible, I recommend that you plug the “unrecognized” drive to some other Windows Server 2003 computers to test whether it works. If the issue continues, I suggest that you contact the vendor or the drive for more details.
By the way, what’s the version of Windows Server 2003 you used? Please update it to the latest service pack to check whether they works.
Best Regards,
Vincent Hu

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