johnfc2020 Posted March 4, 2020 Share Posted March 4, 2020 (edited) Hi, I have a Dell E6230 with a 250GB SSD and 4GB RAM and want to install Catalina. I followed the steps in the guides but the Dell doesn't want to boot the memory stick as UEFI, it only sees it as a Legacy USB stick. The Dell has A20 BIOS and when booting from USB it says Missing Operating System. I'm using my MacBook Air 4,1 which I recently updated to Catalina, but it still didn't work when it was running High Sierra. Edited March 4, 2020 by johnfc2020 It automatically posted the post before I could complete it. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted March 4, 2020 Administrators Share Posted March 4, 2020 We have a fully detailed guide + a dedicated BIOS settings thread for this particular model; please refer to those. Link to comment Share on other sites More sharing options...
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