I have recently bought a new;
4.2 GHz Intel Core i7 Quad-Core
32GB of DDR4 RAM 1TB SSD
High Sierra OS 10.13.1
My previous was a Win 7 pc, which I had 4 ext HDD, 1 2TB, and 3 TB, of which I have only gotten one to be recognized... the 2TB!!!
My problems are;
1- I can't get permission to write to the drive, I can read, but not write!!!
2- From time to time I have to remount this 2 TB HDD on the OS 10.13.1
iMac with Retina 5K display, iOS 10.3.1