Thank you, phillpower!
reporting:
- USB drive is not in. Pressed a key to reboot the machine.
- when seeing the Dell logo, pressed F12
This time, the screen:
========================================================
"Boot Mode Is Set to: UEFI, with Legacy OPROM; Secure boot: OFF"
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LEGACY OPTIONS:
CD/DVD/CD-RW Drive
Network
UEFI OPTIONS:
Windows Boot Manager
Onboard NIC (IPV4)
Onboard NIC (IPV6)
OTHER OPTIONS
BIOS Setup
Diagnostics
Device Configuration
BIOS Flash Update
Change Boot Mode Settings
SupportAssist OS Recovery
========================================================
It occurred to me there was no USB option because drive was not inserted, so I inserted it and rebooted again.
This time, it appeared as the first option in 2 sections:
LEGACY OPTIONS:
USB Storage Device
CD/DVD/CD-RW Drive
Network
UEFI OPTIONS:
USB1 - UEFI OS ( MAP)
Windows Boot Manager
...
I executed the [USB Storage Device] option.
This opened a Windows Setup screen, language choice screen, and then a screen with an [Install now] button.
Next was the license screen.
On the next screen, I chose the [Custom: Install Windows Only...]
As before, became stuck on the "Where do you want to install Windows?" screen.
Drive 0 Partition 1 Primary
Drive 1 Partition 1: ESP System
Drive 1 Partition 2 MSR (Reserved)
Drive 1 Partition 3: OS Primary
Drive 1 Partition 4 Recovery
Selecting any of the partitions triggered the same error message:
"Windows cannot be installed to this disk. This Computer's h/w may not support booting to this disk. Ensure that the disk's controller is enabled in the BIOS menu."
The " Partition 3: OS" had one additional warning: "Windows cannot be installed to this disk. The selected disk is of the GPT partition style"
Thank you!
BerDov