- Aug 14, 2010
- RX 580
- Classic Mac
- Mobile Phone
Sound as if Win10 was not properly installed UEFI mode.CSM was not disabled in BIOS. It was locked on "Always" but after I switched whatever the OS switch just above it was from "Other OS" to "Windows 8" it became accessible and I switched it over to Disabled. I then switched the OS switch back over to "Other OS". The menu that asks whether I want to be able to boot "UEFI Only/UEFI and Legacy/Legacy Only" had been set at "UEFI Only" when I made these changes. Now that CSM is disabled that menu is no longer accessible and it's locked on "UEFI Only." No idea whether this is important or not.
When I look at the Boot order on the first screen of the BiOS I noted that none of the icons that represented the Windows drive had the little UEFI icon above them as some of the others did. But I thought I had installed Windows 10 as UEFI. Could I be easily mistaken on that point?
After making the changes I've made above I rebooted the machine and tried to boot into Windows 10 from Clover. First I got the little wheel of spinning balls and soon "Preparing Automatic Repair" appeared, then "Diagnosing Your PC" and finally the screen that says "Your computer didn't start properly" and the options to restart or to try to fix the thing. So I restarted and when I got to Clover tried again to boot Windows 10. This time no messages, just the spinning balls wheel and then a black screen and the power light on my monitor blinking as it does when it's not getting any content.
If Win10 installs UEFI mode there are 4 partitions
Partition 1 = Recovery
Partition 2 = EFI
Partition 3 = Microsoft Reserved (MSR)
Partition 4 = Primary Partition (C:\)