after update to Yosemite my external HDDs are no longer recognized
hi,
after a recent update to OS X Yosemite,
my WD external HDDs are no longer recognized (all Mac formatted und fully functional).
They are three different types and they neither show up in Finder or in the disc utility.
Tried Google without luck - only saw that thousands of users have the same problem.
Is it solvable or should I start thinking about undoing the update?
Thank you in advance!
Model Name: MacBook Pro
Model Identifier: MacBookPro6,1
Processor Name: Intel Core i5
Processor Speed: 2.53 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 8 GB
Processor Interconnect Speed: 4.8 GT/s
Boot ROM Version: MBP61.0057.B0F
SMC Version (system): 1.57f18
MacBook Pro, Mac OS X (10.7.5)