Trixi Vengai asks:
I have a USB 3.0 hard drive multi-port (toaster) with two hard drives in it, which read as 3 a one is partitioned, all formatted to exFat.
My new MacBook Pro could read the hard drives, but when I bumped the machine at all they would disconnect. After this the MacBook wouldn’t read the hard drives. A Pram reset worked, but then it happened again.
Installed a new USB 3.0 driver which Apple said should keep the hard drive from disconnecting so easily, but now the Mac Book is not reading the hard drives at all. Not in Disk Utility either. PC laptop can see them without issue. Pram reset doesn’t work. I’ve googled the hell out of this and am at a loss.
Browser: Safari 6
System: Mac OSX Lion 10.7.4
Tagged: detect hard drive, exfat, external hard drive, hardware issue, hardware recognition, mac tips, macbook pro
System: Mac OSX Lion 10.7.4
Tagged: detect hard drive, exfat, external hard drive, hardware issue, hardware recognition, mac tips, macbook pro
8 Answers -
ha14
August 20, 2012perform the pre SMC reset steps described by apple
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964?viewlocale=en_US&locale=en_US
Frederick Doe
August 26, 2012Does the USB port see anything else? It’s possible that the port itself is physically damaged.
VictorGeis
August 27, 2012I’m on the side of Fredrick, it sounds like it could be the port. Try and see if any other drives do something similar when plugged into the port. Maybe its the cord itself too; try using a USB extension cord and see if you get any different results.
Christopher Webb-Orenstein
September 13, 2012Hi there,
A few options I would suggest to troubleshoot this are:
1. Check to make sure your USB ports are not damaged in anyway.
2. Try using a different USB 3.0 chord
3. Try attaching a different hard-drive with your USB 3.0 chord
4. Try attaching a different hard-drive with a different USB 3.0 chord
Hopefully one of these options will give you a better idea what the problem is.
Eduardo Ceballos
September 16, 2012I have the exact same problem, and It’s doing it to my USB 3.0 Portable Hardrive no matter what kind of format I use (exFAT, FAT32, etc). It works at the beginning and then when I bump my computer or the hard drive even slighty it says it disconnected and then it wont show up when I plug it in again and again. I have to reformat it on a different computer for it to work again. I just opened my new macbook pro retina and its only doing this to my USB 3.0 HDD, I also have a USB 2.0 HDD that works just fine and this doesnt happen while using it.
Kavita
October 6, 2012i think your hard drive is tempered…or still apple has not fixed the problem with usb3.0
Alex Perkins
October 9, 2012Have you tried the other ports on it, that one could be faulty.
Sashritha Peiris
December 12, 2012try it on a windows. It might be a exFat error