external hard drive went read only

You keep posting a link that doesn't mean anything in terms of technical data AND is for the Wrong Drive. Please, read!

Your LINK http://www.seagate.com/www/en-us/products/external/external-hard-drive/mac-deskt op-hard-drive is for this drive: GoFlex™ Desk for Mac® External Drive which is totaly different than DanDoor's

DanDoor is using FreeAgent® GoFlex™ Desk External Drive, now look for it and see its technical data… I hope you understand this.

As I mentioned before, it MUST be reformated to HFS+ to use backup software for Mac or Time Machine® software

However, I didn't ask you to show me your lack of ethics.

(1)

BookX wrote:

all Seagate hdd are NTFS formatted by default from manufacturer.

(2)

Seagate wrote:

Comes formatted for Mac computers

N/C (the stress is mine).

I thought you understood from the beginning that I was talking about this category of ALL Seagate drives:

FreeAgent® GoFlex™ Desk External Drive

You're not getting it, still?

GoFlex™ Desk for Mac® External Drive is formatted by default for MAC (and suggested by you)

FreeAgent® GoFlex™ Desk External Drive by default is formatted for MS Windows (this is what DanDoor has)

Both types of HDDs are compatible with both OS' - the only difference is that they are pre-formatted for a particular system, so the user doesn't have to spend time reformatting for his/her machine.

You nitpicking trough phrases to get me with something I missed or, I wrote?

Here's my lo-tech solution (if you have Parallels) to this frustrating problem:

Eject your hard drive.

Unplug (USB) your hard drive from the MAC .

Start Parallels.

When Windows has started, plug your drive back into the MAC.

You should get a little screen asking if you want the drive to be utilized by MAC or Windows. Select Windows.

Use Windows to copy your files over to the hard drive.

This is less than ideal and not a long-term solution, but I was afraid of attempting any reformatting since I have many files on my hard drive.

Just remember that Windows has to be running first, before you plug in your hard drive.

Endlessindigo, has that solution (simply starting Parallels, starting Windows, then plugging in the external hard drive and clicking on "Use Windows to copy your files over to the hard drive") worked for you?

Doing this, can you freely read from AND write to the external NTFS hard drive from your Mac without need for any third party NTFS app like Tuxera or Paragon?

Yes, I can freely read and write to the external hard drive from my Mac by starting Parallels, waiting for Windows to start, plugging in the hard drive, and selecting "Windows" when asked which OS I want to utilize the drive. I do not have any third party apps. Perhaps I just got extremely lucky, but this has worked on 2 external hard drives, and I hope it might be a solution for other users.