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[Guide] HP 6300 Pro / HP 8300 Elite - A 100 percent Working and Easily Affordable CustoMac

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I'll just add something that is kind of strange.

I installed a second SSD with Windows 10 on it, using a tonymac guide. Weirdly, I checked my BIOS settings, and they were back to default (port A enabled, legacy supported, etc.)

But (1) everything works fine and (2) if I change it back to values asked by this guide, my computer wont boot (nothing on screen) and i'm forced to unplug everything, toss away the CMOS battery to reset the BIOS and get it to work again !

To put it short, I (seemingly) have a perfectly functional HP 8300 Elite SFF double booting with (1) MacOS installed on the first SATA SSD a while ago with this guide (2) Windows 10 on a second SATA SSD. All working out of the box with default bios values. I didn't even have to do these kind of work to make clover selected by default : not having to get in bios to do anything with boot sequence, my system naturally selects clover, making me able to chose between systems.
 
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Ugh, I am dumb. I thought all RX 560 4GB didn't need external power and I bought the XFX and notice it needs a six bin! There is no way I can use this?
 

trs96

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There is no way I can use this?
Return it and get the MSI 4GB version which doesn't need a 6 pin adapter. Even if you could power the XFX it has an incompatible with macOS BIOS that you don't want. Hope you can find the MSI.
 

trs96

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I (seemingly) have a perfectly functional HP 8300 Elite SFF double booting with (1) MacOS installed on the first SATA SSD a while ago with this guide (2) Windows 10 on a second SATA SSD.
When you installed windows did you have the macOS drive connected to sata power and sata data ?
If you followed this guide https://www.tonymacx86.com/threads/make-a-windows-10-uefi-usb-installer.228959/#post-1557619 Windows should be installed UEFI and you then wouldn't need legacy support enabled to boot it. This is why I prefer to not have Windows and macOS booting on the same machine. Things can become a colossal mess very quickly.
 
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Joined
Mar 6, 2015
Messages
103
Motherboard
HP 8300 Elite CMT
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i7 3770
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GTX 1050 Ti
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iOS
Return it and get the MSI 4GB version which doesn't need a 6 pin adapter. Even if you could power the XFX it has an incompatible with macOS BIOS that you don't want. Hope you can find the MSI.
Ok thanks, I went with it because it was $30 cheaper and burned myself.
 
Joined
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Dell Optiplex 7010
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When you installed windows did you have the macOS drive connected to sata power and sata data ?
If you followed this guide https://www.tonymacx86.com/threads/make-a-windows-10-uefi-usb-installer.228959/#post-1557619 Windows should be installed UEFI and you then wouldn't need legacy support enabled to boot it. This is why I prefer to not have Windows and macOS booting on the same machine. Things can become a colossal mess very quickly.
Actually, yes, I didn't unplug the first SSD in the same time. Is it an issue ?

I might reinstall windows from scratch to make sure i wont have troubles if you think it can be. Haven't used windows yet but will become part of my work computer to use windows only softs.
 

trs96

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I didn't unplug the first SSD in the same time. Is it an issue ?
Windows will overwrite the EFI partition it sees on the macOS system drive when you are installing Windows. You always want to disconnect your macOS SSD when installing Windows. See the Multibooting forum for more on this.
 
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So, do you think I should redo the full installation of macOS as well ?
 

trs96

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So, do you think I should redo the full installation of macOS as well ?
Try booting it on it's own, with the Windows drive not connected and see if it boots. You may need to reinstall Clover, FakeSMC and other necessary kexts and UEFI drivers to the EFI of that drive to get it working again.
 
Joined
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Dell Optiplex 7010
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i7 3770S
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Try booting it on it's own, with the Windows drive not connected and see if it boots. You may need to reinstall Clover, FakeSMC and other kexts to the EFI of that drive to get it working again.
It does still work if I unplug Windows' SSD.

To be frank, I've red almost everything on the forums about this issue and I think I did all correct. My Windows installation was not legacy but UEFI, and I did not overwrite the Clover's EFI partition on disk0.
The only issue I keep having is the same as everybody on this thread and on others : if I chose Windows once on clover bootloader, it will start only booting straight to windows at each reboot. Only way to solve it is to unplug Windows SSD drive manually.

It has something to do, I guess, with the fact that Clover disapears from the booting options in the bios.

I've tried renaming the windows .efi and replacing it with clover's .efi file but without success (it basicly killed windows that could no longer boot from clover).
 
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