I can see still see 'Hitachi' in the 'Devices' Sidebar, but I am not able to view folders and files on this Hitachi XL2000 2TB FAT32 Hard Drive (EHD) that is USB connected to the iMac below.
Late 2013 Apple iMac (27-inch Display 2560 x 1440), 3.4GHz Quad-core Intel Core i5, Turbo Boost up to 3.8GHz, 8GB 1600MHz DDR3 SDRAM - 2X4GB, 512GB Flash Storage, NVIDIA GeForce GTX 775M 2GB GDDR5, Magic Trackpad, Apple Wireless Keyboard and OS X 10.9.4 Mavericks
All was fine until I updated from OS X 10.9.3 to 10.9.4 earlier this week, so now when I double-click on 'Hitachi' it just loads and loads with nothing happening and never displays the folder and file contents of the EHD.
I have used OnyX and Apple Disk Utilities unsuccessfully to try and fix this problem.
Interestingly, Backblaze online backup still sees the EHD and connecting this EHD to a Win 8.1 PC also sees the EHD.
Further, I ran the commands below in 'Terminal' to make sure the drive was visible and got the following results which shows that the EHD is not hidden.
iMac:Applications john$ chflags nohidden /Volumes/Hitachi/
iMac:Applications john$ GetFileInfo /Volumes/Hitachi/
modified: 07/10/2014 23:26:44
Finally, I installed XtraFinder and am still not able to see the contents of the EHD.