I ran the Mac OS High Sierra security update 2017-001 and now my two Pegasus 2 R8s won't mount. They were working fine with 10.13.1 prior to that. I checked for the latest Pegasus driver update, I have the latest. Since they won't mount, I cannot even get to them via Promise Utility, so I can't check for any updated firmware for them. I can physically turn the units on, they power up to all blue lights, and then immediately shut themselves off. I didn't think that this was affecting it, but I found that Apple had a filesharing problem after this update, so I ran the terminal fix for that just in case it was affecting communication with the Pegasus. That did not help. There is a 2017-002 security update for High Sierra out, not sure if I should run that one to try and fix? (I don't want to mess anything up further.) Has anyone else run into this problem and figured out how to fix it?
With Mac OS High Sierra 10.13.1 Security Update 2017-001 Pegasus 2 R8 won't mount
- 241 Views
- Last Post 07 December 2017
Deborah Finkelstein
posted this
07 December 2017
- Last edited 07 December 2017
Richard Oettinger
posted this
07 December 2017
I would first check to see if macOS let the Pegasus driver install.
Open System Preferences, select Security & Privacy, and the General tab.
The bottom section is named "Allow apps downloaded from:" -
is there a warning about a driver not loaded and an "Allow" button?
Deborah Finkelstein
posted this
07 December 2017
- Last edited 07 December 2017
Thanks! Yes, macOS had let it install. I received the "installed successfully" message after install. I already had the latest driver, 6.2.9, but re-installed anyway to see if that would help. I also tried switching the thunderbolt ports, this did not help either.
