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Format issues on Seagate 9SF2A8-500

Formatted originally for MAC. Now want for PC. PC won't recognize it. How do I format it for PC now?

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If you want to format it for PC, go to partition manager and the HDD should show there, if not use a partition manager program to select the HDD. Now you should format it to NTFS for windows or FAT32 if you want to use it for windows and mac.

Posted on Nov 03, 2012


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Posted on Jan 02, 2017

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SOURCE: How do I format a Seagate 500 to work on a Mac?

I bought one of the Seagate FreeAgent 500 devices yesterday and followed the instructions on the back of the box: plug it in; let the Mac recognize it; go to the Disk Utility function (found in Applications > Utilities); select the Erase tab and check the box to re-format the FreeAgent to Mac OS Extended (Journaled) and choose a name for it.  Then proceed with the re-formatting.  It took only a few minutes but as soon as it was done, Time Machine (Leopard) kicked in and asked if I wanted it as my backup drive.  I said yes, and away it went.  Hope this helps.  By NewbieMacUserSept2007

Posted on Dec 29, 2007

SOURCE: After blackout Mac-formatted ext. hard drive won't mount says its pc-formatted

Here is my best guess and strong suggestion. First do nothing else until you have your work off loaded to some other drive or media....and I mean do nothing....don't even turn it off until this is completed. Once that is done verify your work is there. Then learn to smoke or drink and sing hallelujah.

My best guess is you lost the FAT (file allocation table)...meaning it got (literally) zapped by the power failure (spike) which makes sense since it's continually being accessed. Lacie should have a disk diagnostics program on their website....that loaded onto a diskette or cd would be my first step. It will tell you if the drive is good or not. If good and after you have off loaded your files to a safe media then the fastest solution is probably to reformat and reload your applications then reload your files. I say fastest as (in my twilight years) I have almost (it's a pride thing) given up solving hard problems the hard way...particularly when they can be both hardware and software interrelated.

A couple of other points....uploading to the net your files (even if it costs) or using a bit torrent to transfer to a friends machine (pay for the other drive) or using raid (which I am not a big fan of) or copying them to a one touch....(possibly the least expensive solution (just start it at's not fast the first time and do it daily). You have too much invested to get had by Mother Nature.

Why would I tell you this....well, there was the time I worked all night to finish some code and just as I finished (without saving once) and feeling satisfied I stretched back, extended legs and knocked the plug out of the socket. I also had a computer shop
wipe my disconnected spare duplicate drive at the same time they wiped my master. Today, and I have multiple large projects I work on (mine...not others), and despite more backups in more ways than you can imagine I am still subject to bouts of paranoia.

Lastly....Am not up to date with Mac but at some of the freeware sites I have run across utilities that might be of help. Trying to restore the fat (Windows keeps two copies) might be a possibility and I assume Mac has something similar. But I would only attempt this based on what the drive diagnostics results are....i.e. if you have more than 4 bad clusters it's probably not worth taking the chance of another major disruption. Hope this helps or at least points you in the right direction. Tango

Posted on Jan 25, 2008

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SOURCE: WD MyBook Studio works on Mac but not showing in My Computer (PC)

If the drive is NTFS formatted you can use/install MacFUSE.

Posted on Jan 06, 2009

  • 150 Answers

SOURCE: LaCie 500GB was formatted for MAC and given for

You will need to format the device for Windows use. If you can see the device in My Computer, right click it and select format. if you can't see it in My Computer, you will need to use a boot tool such as Gparted:
Download the .iso file and burn it as an image to a cd, then boot from the CD at startup. It should detect the 500 Gb drive and allow you to format it to NTFS. Then Windows will recognize it.

Posted on Mar 09, 2009

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SOURCE: Lacie RUGGED 250GB not recognized by my PC

I think the migration assistant (in the utilities file in your application folder) can transfer files direct via USB.

Posted on Aug 10, 2010

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