From here, you can install macOS Catalina, use Disk Utility to format your drives, or restore your Mac using Time Machine. This bootable USB drive can be handy in many different scenarios. A macOS Catalina USB install drive is a great tool to have on hand to for quick and easy macOS 10.15 reinstalls. We show you how in this video tutorial. How to Create macOS Catalina Bootable USB Flash Drive Installer Using Terminal Here’s how to create macOS Catalina 10.15 bootable USB flash drive installer for a clean install on your Mac. With macOS Catalina being Apple’s latest software release, it stands to reason that there is going to be a big interest in it.
I start the installer, point it at my external SSD, and it starts chugging, looking all OK. The progress meter says 5 minutes. After around that time, with nothing unusual reported, the screen goes black and the restart sequence begins. But it restarts from my internal disk and the new installation is not complete.
Second attempt, I followed instructions to create a bootable USB installation disk on another USB drive, booted to it and started the installation from there. Same result.
Any suggestions?
Hello! It looks like the device is possibly an SSD replacement candidate. I'll have to check into that. I did erase the drive after clicking on the option to view all devices. I deleted both the partition and the root physical drive using the Disk Utility. I'm wondering if maybe the EFI is corrupted or if the creation of the boot records when installing are somehow not what they should be. Other solutions have talked about having to have the Apple support team do a firmware upgrade, fix the EFI, etc., which I'm not sure why I couldn't do myself.
I appreciate the response and will keep working on it while our Apple stores are closed. Thanks!
Install Catalina On Usb Drive Windows 7
Install Catalina On External Usb Drive
May 13, 2020 2:09 PM