External thunderbolt hard disk not powered from MBP
i just bouth a Lacie Rugged external hard disk (1TB, Thuderbolt series).
when i connect the drive to my early 2011 MacBookPro it doesn't appears on the desktop -- the drive doesn't receive power from thunderbolt cable (led remains off)
i tried the following:
1) connected my MBP to another external thunderbolt drive and it works (this drive has external power) = thunderbolt port on MBP works fine
2) connected Lacie Rugged to my iMac via thunderbolt cable and it also works = drive is ok, original thunderbolt cable is ok, it is powered from thuderbolt port
3) connected Lacie Rugged to my MBP via USB and it works = drive is ok, it receives power supply from USB port
4) connected Lacie Rugged drive to my MBP with another thunderbolt cable that i am sure is fine = drive doesn't get powered, disk won't mount
earlier today at local apple store i have been told that this drive was the best choice for my 2011 MBP...
so anyone knows why this drive is not working (not getting powered) via thuderbolt connection?
i searched over internet and on this forum with no luck, thanks in advance for your help
ciao
MacBook Pro, OS X Mountain Lion (10.8.5), early 2011, 2.3 Ghz i7