Guide: Multibooting UEFI on Separate Drives

[Going Bald]

Some help pls.
I've recently installed Mojave on my oldish PC. I used a fresh SSD and I have it running after a few issues with a PS2 keybaord (all sorted).
I've a separate Win10 SSD I used in that same machine. and a 3rd HDD for storage.
I plugged all the drives and started the PC. Got to the bootloader and I can select and boot MacOS, but can't go into windows. I see 3 NTFS drives (HD1, HD2, HD3). 1 & 3 gives me a blinking cursor. 2 just hangs.
I don't understand the guide on the first post. My windows is already installed and working, it's what I was using previously.
What should I do to enable dual boot?

Did you install Clover Legacy Mode or UEFI? Since you are seeing HD1, HD2, HD3 for Windows drives, if none of them say boot UEFI from UEFI in the label under the icons when you select one of them Windows is installed Legacy Mode. You have a choice at this point: the GA-H87-D3H has a UEFI BIOS - you can install Clover UEFI and run a conversion app on the Win10 drive to convert it from Legacy Mode to UEFI and it will boot.
You can install Clover Legacy Mode and enable CSM in the UEFI BIOS and not bother with converting the Legacy boot Wind10. Make sure the Scan >Legacy is enabled in your Clover config.plist.

 

[elTanqueAU]

you can install Clover UEFI and run a conversion app on the Win10 drive to convert it from Legacy Mode to UEFI and it will boot

pretty sure I installed clover UEFI. Can't remember if windows was installed as Legacy. What sort of conversion apps are there?

Edit:
ok, because I was pretty sure I installed Clover UEFI, I decided to convert my windows install to UEFI (mbr2gpt /convert). All went well, I disconnected the mac drive just in case, booted a few times. All good.
Then plugged both drives (note, I have a 3rd one for data) but PC would boot directly to windows. Had to force to boot from P3: UEFI something to get into clover.
Changed boot order in BIOS. Now Clover gives me the option for Windows and Mac
Thanks!
How do I make it boot by default after "x" seconds into windows?

 

[Going Bald]

pretty sure I installed clover UEFI. Can't remember if windows was installed as Legacy. What sort of conversion apps are there?

Edit:
ok, because I was pretty sure I installed Clover UEFI, I decided to convert my windows install to UEFI (mbr2gpt /convert). All went well, I disconnected the mac drive just in case, booted a few times. All good.
Then plugged both drives (note, I have a 3rd one for data) but PC would boot directly to windows. Had to force to boot from P3: UEFI something to get into clover.
Changed boot order in BIOS. Now Clover gives me the option for Windows and Mac
Thanks!
How do I make it boot by default after "x" seconds into windows?

config.plist edit change default drive to Win10 drive, set delay for however many seconds you want:

Typical Clover config.plist boot section - change hi-lited items:
<key>Boot</key>
<dict>
<key>Arguments</key>
<string></string>
<key>Debug</key>
<false/>
<key>DefaultVolume</key>
<string>Win10</string>
<key>Legacy</key>
<string>PBR</string>
<key>Secure</key>
<false/>
<key>Timeout</key>
<integer>3</integer>
<key>XMPDetection</key>
<false/>
</dict>

To get the Win10 drive name open file explorer, right click the Win10 drive, select properties, type name in the box, hit apply, hit OK.

 

[elTanqueAU]

mmm
Got Clover Configurator and did these updates. But I can't see any countdown when booting. It goes into clover bootloader and waits for input. Before it was the same, it wouldn't boot to any OS unless I select it.

 

[Going Bald]

mmm
Got Clover Configurator and did these updates. But I can't see any countdown when booting. It goes into clover bootloader and waits for input. Before it was the same, it wouldn't boot to any OS unless I select it.

What is your timeout integer? You cannot use 0.

 

[elTanqueAU]

What is your timeout integer? You cannot use 0.

It was 3, changed it to 30, made no difference. I assume 0 means wait for input?

 

[Going Bald]

It was 3, changed it to 30, made no difference. I assume 0 means wait for input?

Do you really need 30 seconds to select an icon? Try 5 seconds.

 

[Colombiano]

Hi, I need help installing Windows in a separate drive. I read the first post but I haven't a full understanding.

I've installed Macos (Mojave) in one drive. Running succesfully.

Then, I built a bootable USB installer with windows 10 with dd terminal command. It works.

When I run the USB installer, a warning of missing media controller is shown.

Any help appreciated.

Hi man, I have the same issue, Did you resolve?
@Ortofon I've attached the image

 

[Going Bald]

Hi man, I have the same issue, Did you resolve?
@Ortofon I've attached the image

Try using one of the USB ports next to the PS/2 port for KB and Mouse. These 2 are usually always active with drivers included in the firmware.

 

[elTanqueAU]

Hi man, I have the same issue, Did you resolve?

I had windows already installed in drive 1.
I unplugged and installed Mojave on drive 2.
then followed the suggestions fom @Going Bald to fix my boot partitions and clover.
Although, I can't still make it work to boot automatically into any OS. I need to manually select the OS on the clover menu to boot in.