Hi so what happened was I downloaded Etcher based on the instructions from this page… Tails - Install Tails from macOS
Then I downloaded a disk image of “Trails” operating system (also tried the torrent download) Both the file and the image were verified by the above page verification.
So then I told Etcher to flash the above to a new 64G thumb drive (usb3). The thumbdrive was flashing and Etcher says it worked
however the thumbdrive does not show up in my finder window however Disk Utility see it however disk utility says there is nothing on the thumbdrive (its empty)
additionally, the thumbdrives (TD) came packaged in a group of 3. When I first plus the TD in, it shows up in the finder however after using Etcher, it disapears. Even unplugging it and plugging it back in makes no difference. Turning the machine on and off, makes no difference. Did Etcher kill the two TD’s so far? Im reluctant to try the last one.
Im on 2008 Mac Pro Tower (desktop) El Capitan (10.11.6)
video card is
NVIDIA GeForce GTX 960:
Chipset Model: NVIDIA GeForce GTX 960
PCIe Lane Width: x16
VRAM (Total): 4095 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x1401
Revision ID: 0x00a1
ROM Revision: VBIOS 84.06.26.00.05
(if that makes a difference)
I also asked the trails people but they have an auto reply saying they don’t reply to mac problems.
thanks for your help,