Upgrade to Mavericks does not allow connection to my Lacie external hard drive

Hello Sir Gudo,

Thank you for the details of the issue you are experiencing with your external hard drive. I found an article with steps you can take when an external device is not being recognized.

I recommend following the steps in the section titled "Top troubleshooting tips" in the following article:

USB and FireWire Quick Assist

http://support.apple.com/kb/HT1151

Thank you for using Apple Support Communities.

Best,

Sheila M.

Sheila, those tips are really, really generic, the kinds of things anyone with experience would do as a matter of course. Check cables; restart the system; etc. To be honest, not particularly helpful.

If you google "upgrade to mavericks external drive no longer recognized", you will see dozens of posts with people talking about how their drives have been corrupted, are no longer recognized, can't be accessed, etc. There is clearly something significant that happened during the upgrade that is fubaring external drives. Generic "Have you checked the cable?"/"Is it plugged in?" tips are not what we need.

If you could please dig a little deeper, that would be appreciated.

I have same problem.

I sent mail to Lacie support , but they didn't test the NAS on Mavericks.

same problem here with mbp and lacie network drive. for instance, no tm backup possible 😮

To join this growing list - same problem. I have three external hard drives, different manufascturers. All load but then after a few minutes eject themesleves. Also, optical drive not working since Mavericks upgrade; when I boot from an old version of Lion the DVD reads perfectly so again this appears to be a Mavericks based glitch - and I've seen others encoutering the same problem.

I also face the same problem ... what is this apple? has anybody found any solution yet?

I solved upgrading Lacie firmware and LNA

http://www.lacie.com/us/support/support_manifest.htm?id=10451

I have exactly the same problem with my Hitachi external drive:

https://discussions.apple.com/thread/5953119

Adding myself to the list of people with a Lacie drive that is not working any more on my Mac since I upgraded - terrified that the drive could be corrupted based on everything I have been reading. Lacie says that their hard drives should work with the upgrade. I uninstalled and reinstalled the drivers and still nothing.

My computer recognises that the hard drive is plugged in because the Lacie manager app pops up but this is all that happens.

Hope someone can help us!

Driver: http://www.lacie.com/support/drivers/driver.htm?id=10239

Lacie's comment on Mac upgrade: http://www.lacie.com/us/more/?id=10153

Same problem here but both with a Lacie Mini Hub HD and a Seagate Goflex Home, neither wanting to connect via a USB A to USB A connection. Bizarrely the Lacie will connect via a USB A to USB B cable. And the Seagate will connect vis network

Assume there's some crazy USB issues going on?

Driving me mad!

Same problem. Upgraded to Mavericks. SLOWED my computer down to a crawl...and worst of all the LaCie drive won't mount and it has ALL of my family photos on it 320GB!!!! Please help! I never want to upgrade the op system again after this. PLEASE tell me I'm not going to lose all our family history in photos!😠

Have you tried disconnecting/reconnecting the drive?

Have you tried mounting the drive using the OS X Disk Utility App?

How about a restart of your computer?

I have three LsCie hard drives and Mavericks mounts and sees them all.

I run Mavericks from one of my LaCie FW 800 2 TB external drives.

Yes. I have disconnected and reconnected several times. Fully shutdown, connected, started. It doesn't show up in finder or in disk utility. I have read several posts of other LaCie users who had this problem after upgrading to Mavericks. I also have always connected via firewire, so I tried the USB cord also. No luck. :-(

Have you tried disconnecting all external devices except keyboard and mouse and trying an

SMC reset and/or PRAM/NVRAM reset?

Seems there are actually different problems with different styles of drives.

For those of you who have a Lacie NAS (e.g. Network Space 2), make sure you have the latest firmware update installed - you can do this from Lacie Network Assistant. Once you have that, make sure that you set up your shares for both SMB (for win users) and AFP (mac users). Many have had SMB problems with Mac. For time machine, the share must be AFP and have the Time Machine Service enabled; you can do all of that through the web interface as admin.

For the FW / USB drives, do you have any Lacie software installed on your mac for them? As far as I'm aware, no mac software at all is needed to see the drives, the are just a normal USB or FW - connected drive. Make sure you have copies of any Lacie software that's installed on the Mac (for re-install later if required) and remove it and test.