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  1. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    Not as such, the HDMI port is Digital and therefore fixed level. I tend to watch Youtube a lot which has its own volume control. VLC and other media players have their own volume controls so I don't a problem. You could try adding Soundflower app which gives a lot of control.
  2. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    Latest security update downloaded from the App Store. Installed with no hitches. Make sure you have a clone of your System drive/EFI partition just in case.... Use Clover Configurator. Mount System Partition and Clone Drive EFI partition. Copy System EFI to Clone Drive EFI partition. Unmount...
  3. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    I use a Gt710 graphics card and the HDMI carries audio perfectly. Not expensive and better than the built in graphics.
  4. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    Edit 2: Sorted at last. In High Sierra, after downloading the Security update and Installing/Rebooting, you MUST select Preboot Install Partition at the Clover Bootloader. After a few minutes the PC will Reboot again and you MUST select the Install Partition at the Clover Bootloader. After 10 or...
  5. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    We're back in business. By chance I'd mounted then copied the EFI partition (Clover Configurator) on the System drive to my Toshiba USB drive which also has an EFI partition (Apple format is good like that). With both mounted, I'd simply copied using Finder, the EFI from the System to the...
  6. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    Just updated Clover to the latest Stable Version via Cover Configurator and..... bang, black screen at OSX loader. No go. I can see why people always say, back up entire System Drive/EFI Partition before doing anything.
  7. AlanF

    Dell Optiplex 3020/7020/9020 High Sierra Installation

    Does High Sierra (10.13.6) security update install without incident? I've got my machine running really well and I'm loath to alter it but security is obviously important. I've got iMessage and Handoff working brilliantly thanks to the imessage_debug (v1) utility provided elsewhere on this...
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