Currently Being ModeratedAug 18, 2012 5:02 PM (in response to hani7up)
Is your iMac not seeing both of the hard drives? Will your iMac see the drives if they are directly plugged into it?
Currently Being ModeratedAug 19, 2012 1:24 AM (in response to RRFS)
I didn't actually try this because while waiting for an answer from the Group, I did a Google searched and discovered I had to update my iMac's Efi and SMC firmware, which the normal day to day Software Update sometimes ignores. I found an update, installed it and restarted my comouter around 10 times and the result was good. The HD always appeared connected. It seemed the upgrade fixed a bug that had to do precisely with this issue among another couple of tweeks.
Thanks for your help anyway, and in case the problem occurs again, I'll give you suggestion a try. I assume your question would solve the issue of the efficiency of the Hub.
Currently Being ModeratedAug 19, 2012 12:33 PM (in response to hani7up)
Great work, thanks for the report!
Currently Being ModeratedAug 19, 2012 3:56 PM (in response to RRFS)
I am afraid I have bad news...
Updating the EFI and SMC firmware of my iMAC did not solve the issue. I have just arrived home, at 00:30, eager to send an important business email. I switched on my computer and surprise, surprise,... none of the USB HD appear on the desktop. In other words, we're back to square one.
It's too late to start tinkering away now. I will try to follow RRFS's advice and connect the 2 HDs directly to the rear ports and will see what happens.
I'll keep you informed.
Currently Being ModeratedAug 20, 2012 5:03 AM (in response to hani7up)
I have a simillar problem with my WD external HD (1TB) connected directly to the USB port. OS is 10.6.x (the latests 10.6), not always hapend, but some times. I have another HD conected by Firewire for the time machine task, no problem with it. I´m thinking to move to the 10.8.x OS, but i dónt know if it will be resolved.
Tested the same HD in other MAC (Mac book) with a 10.7.x OS, it works fine.
Currently Being ModeratedAug 20, 2012 12:26 PM (in response to luisyalmu)
Hi Luis, I'd wait on 10.8, or at least investigate all the new problems with it first.
Currently Being ModeratedAug 23, 2012 9:55 AM (in response to hani7up)
Just to keep yu guys posted, both USB HDs are directly connected now to the rear USB ports and so far so good, no disconnection, no monkey business. It's not the set up I thought I'd use, but will keep it for the time being till I get a solution and get to use my HUB for those 2 HD without any indicences.