Apple Event: May 7th at 7 am PT
Running Yosmite 10.10.5 on iMac and have a Lacie external drive that mounts fine, but a companion Lacie external drive attached to it does not not show up. The second Lacie is daisy-chained to the first in one USB3 port. I also have a Seagate external drive connected to the iMac in a USB2 port and it does not mount either. I have tried everything I know to do, but cannot get these drives to be recognized. Can anyone help?
Flegal
iMac, OS X Yosemite (10.10.5)
Reset the SMC and PRAM (may take 2-3 attempts) and do the resets with all peripherals disconnected. Then re-attach and re-test. The instructions for the resets are in iMac SMC and PRAM reset. If the resets do not take care of the problem post back and we can try some other things.
Tried the SMC + PRAM reset to no avail. The Lacie's are connected with Fire Wire and not USB3 if that makes any difference.
Did you do the resets multiple times as instructed? If so and it still does not work then disconnect all the peripherals and connect each one by itself and test. If it will not work, try with different cables and retest. You will likely need to retest each device individually changing out the cables and doing SMC and PRAM resets with each device. My guess is you have either a EHD that has failing or failed OR you have a bad cable somewhere.
rkaufmann87:
None of the remedies seemed to work. I guess my next step is to go directly to Lacie and Seagate?
Flegal
External Drives Won't Mount
