Currently Being ModeratedJun 7, 2013 9:31 PM (in response to Anas Shabsogh)
Hi,I suspect a bad cable first, but does Disk Utility show anything?
Currently Being ModeratedJun 8, 2013 1:37 AM (in response to BDAqua)
Unfortunately no, the disk utality show nothing,
I conected the thunderbolt cable with a black magic camera and it works fine, realy strange
Currently Being ModeratedJun 8, 2013 1:44 AM (in response to Anas Shabsogh)
There are three obvious possibilities. Bad cable, bad thunderbolt port, bad software. Cable's probably the easiest to check. It's up to you as to what order you want to elliminate them. I'd guess each drive came with a cable? If you have two cables it's unlikely they are both bad. It's also unlikely both drives are bad. BD asks a good question....is Disk Utility seeing them? Possibly they are just not mounting on the sidebar. That can happen. They may be mounted but not being seen. Check Disk Utility. Possibly they have to be formatted before they'll mount and be seen. I loathe Mybook hard drives. They use software that may be causing trouble. If the drives were meant for a PC they may need to be formatted. I'd be looking at that as a possibility.
Currently Being ModeratedJun 10, 2013 10:17 AM (in response to Anas Shabsogh)
Hello. My 27" iMac currently has what appears to be 2 dead thunderbolt ports. At least, no external drive I connect to either port will mount or show up as connected. I've verified that the drives are good and that the cable is good. Funny thing is that I was mounting the same drives with the same cable when I initially got this iMac, and they worked fine. Then they stopped working and curiously, a Thunderbolt firmware update was released shortly after they stopped working, although that update fails to install. There's another user reporting a similar problem with dead Thunderbolt ports on an iMac here:
At this point I'm probably going to bring my Mac into an Apple Store as was recommended by Apple Tech Support.
Currently Being ModeratedJun 10, 2013 12:09 PM (in response to Dawn Messerly)
Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you might be eligible for onsite repair since yours is a desktop machine (depends on where you're located).27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.4), G4 450 MP w/Leopard, 9.2.2
Currently Being ModeratedJun 10, 2013 12:20 PM (in response to baltwo)
Tried the PRAM zap and the SMC Reset last night with Apple Tech Support. None worked. The tech person did not suggest for me to take it in for repair as they seem to think there is a bug on the latest firmware update. At this point, I'm thinking of re-installing OS X back to 10.8.3.
Currently Being ModeratedJun 11, 2013 9:03 AM (in response to Rob88)
Well, it is not resolved for me. That being said, the second tech I talked to said that this is NOT a known issue, which contradicts what the first tech I talked to said (and also contradicts the fact that a number of people seem to be reporting it). So, I'm not sure what to think. I think I will wait and see if it gets resolved on Apple's end. I have another Mac with which I can use my external drives, so I'm not in any hurry.
Currently Being ModeratedJun 11, 2013 2:57 PM (in response to Dawn Messerly)
I bought 6 thunderbolt cables 2 of them it works fine with the drives,
I don't know why but it works at the end
I reformat the 2 drive (6tb for each) as individual drives and Combines them as one giant raid 0 (12 tb) drive for maximum speed and I got over than 450 mb/s.
Currently Being ModeratedNov 6, 2013 8:45 AM (in response to Dawn Messerly)
I have a new "out of the box" iMac 27" delivered last Friday together with a new WD Thunderbolt Duo and New Thunderbolt cable and am suffering the drive not recognised problem. I've been on to Apple Support and have carried out all the suggestions but the ports still appear to be dead. They've now suggested I send the iMac back or take it to a store but as the nearest store to me is a 3 hour each way drive it will be a last resort. The iMac works fine other than not being able to back anything up.
Did you get the problem resolved at the Apple Store?
Currently Being ModeratedNov 6, 2013 8:49 AM (in response to Lussac)
I have not yet taken my Mac into the Apple Store. I need to do it, but I work in software development and I'm on this Mac 8+ hours a day, and would be hard pressed to be without it for any period of time but I'm just going to have to bite the bullet and do it.
I have two problems that persist
- Thunderbolt ports are dead (they worked for a while shortly after getting the computer)
- Thunderbolt firmware update never installs - I have tried it probably 40 times (not exaggerating)
Thanks for the reminder to get it looked at ;-)
Currently Being ModeratedNov 6, 2013 9:11 AM (in response to Dawn Messerly)
OK Dawn, thanks for the quick reply. I bought my iMac in the UK but am currently living in France so my nearest store is in Bordeaux and Apple Support say that I won't have any problems taking it there. I'm looking at booking a Genius appointment for next Thursday and will let you know how I get on.
If they have to replace the machine I hope they can transfer everything as I've spent days setting it up!!!
Currently Being ModeratedNov 14, 2013 9:58 AM (in response to Lussac)
OK, Just back from the Apple Store Genius visit and re-assembled everything. Turns out it was the new Thunderbolt cable that was bad, it was the first thing he checked so my guess is it's not an uncommon problem. Plugged a new cable in and all was OK with the drive being recognised immediately. So, that was a three hour drive each way to replace a cable......
Currently Being ModeratedJan 29, 2014 8:36 AM (in response to Anas Shabsogh)
Looks like its the app store.
Download it directly and run it.