Questions regarding upgrading from W7 to W10 4,1->5,1

[UnMix]

I'm currently running Windows 7 bootcamp but need to upgrade to W10 for software compatibility. I've searched around the forum and I can't find a definitive explanation on how to upgrade 'safely'. I have an AMD HD 7950-flashed- so I have bootscreens. From what I've read I'm assuming I need to re-install Windows 7, install bootcamp 5.1 drivers, THEN upgrade to Windows 10 (using the media creation tool?) with a DVD. I don't know if I can just do a clean install upgrade from my W7 since bootcamp drivers might fail to install afterwards? Would be easier.

Taking a look at: https://forums.macrumors.com/thread...ut-a-boot-screen.2114788/page-9#post-26689280 I'm not sure if this guide 100% applies to what I'm trying to do since this is for without a bootscreen. Step 4/5 confuse me, will my disk setup look like this?/ do I need to remove every drive except the SSD for windows?
In my current boot selection screen I have 3 Drives that show up;

Mojave - Windows(actual) - Windows

I don't know why the 3rd one is there, it showed up when I cloned my previous HDD onto this new SSD (Previous HDD is now storage). Sorry for all the questions, I'd like to upgrade but don't want to accidentally run over an important step and end up bricking the machine.

 

[bookemdano]

I'm not clear from your post how many physical drives you have installed and what is on them. You really should have Windows on its own HDD/SDD. If you already do, great.

Since you already have a Win7 install you want to upgrade, you should run your Win10 install disc while booted into Win7 and then follow the installation steps to perform an upgrade, preserving your data. That will also ensure that Win10 gets installed in BIOS mode (since your existing Win7 is in the same mode).

You should not need to reinstall Win7 or do anything with your bootcamp drivers ahead of time.

Once Win10 is installed, follow the steps in h9826790's tutorial from #8 onwards. Those steps will have you install the old boot camp, then uninstall it, and finally install the new version from the iMac Pro that supports the APFS file system in HS and Mojave.

Since you have a boot screen capable GPU, you don't have to install the new version of Boot Camp (since you can switch partitions using the option key boot picker). But I still think it's a good idea because all the drivers and apps in the cMP's bootcamp package are seriously out of date and were never intended to be run in Windows 10.

 

[UnMix]

I'm not clear from your post how many physical drives you have installed and what is on them. You really should have Windows on its own HDD/SDD. If you already do, great.

Since you already have a Win7 install you want to upgrade, you should run your Win10 install disc while booted into Win7 and then follow the installation steps to perform an upgrade, preserving your data. That will also ensure that Win10 gets installed in BIOS mode (since your existing Win7 is in the same mode).

You should not need to reinstall Win7 or do anything with your bootcamp drivers ahead of time.

Once Win10 is installed, follow the steps in h9826790's tutorial from #8 onwards. Those steps will have you install the old boot camp, then uninstall it, and finally install the new version from the iMac Pro that supports the APFS file system in HS and Mojave.

Since you have a boot screen capable GPU, you don't have to install the new version of Boot Camp (since you can switch partitions using the option key boot picker). But I still think it's a good idea because all the drivers and apps in the cMP's bootcamp package are seriously out of date and were never intended to be run in Windows 10.

I have 3 drives, SSD for macOS, SSD for Windows and the previous HDD I cloned onto the SSD, is re-used as storage for Windows.
So after I upgrade to 10, I follow step #8 onwards. Do I need to take my drives out? as #30 says you can put them back in after the brigadier install. I'm also assuming it won't cause issues to run through all that even though there's already existing bootcamp drivers/packages.

Update: I went through with the update, worked flawlessly and I'm running W10; the other post about installing brigadier didn't work, after running the command in step 18 it finishes the download to 100% and then shows a Traceback to some other file location and ends with: IOError: [Errno socket error] [Errno 1] _ssl.c:504 error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure.

 

[bookemdano]

I have 3 drives, SSD for macOS, SSD for Windows and the previous HDD I cloned onto the SSD, is re-used as storage for Windows.
So after I upgrade to 10, I follow step #8 onwards. Do I need to take my drives out? as #30 says you can put them back in after the brigadier install. I'm also assuming it won't cause issues to run through all that even though there's already existing bootcamp drivers/packages.

Update: I went through with the update, worked flawlessly and I'm running W10; the other post about installing brigadier didn't work, after running the command in step 18 it finishes the download to 100% and then shows a Traceback to some other file location and ends with: IOError: [Errno socket error] [Errno 1] _ssl.c:504 error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure.

Not sure if you removed your other drives before the upgrade, but I always think that's best, just to ensure they don't get touched by the installer. Not strictly necessary but an easy precaution to take.

As for your brigadier problem, not sure what that error means exactly but you might try again--maybe it was something transient. But in your situation it's not fully necessary to do that anyway, since you have an EFI GPU and already have the older bootcamp installed from your Win7 setup.

Glad the upgrade went well.