Install Windows 10 Legacy BIOS & Dual Boot OCLP Sonoma, Ventura or Monterey with Bootcamp!

In this video I will show you how to install Windows 10 Legacy BIOS so you can dual boot your OCLP Unsupported 2009-2013 Mac with macOS Ventura, Monterey or Big Sur. UPDATES & CHAPTERS BELOW!

When installing Windows 10 + OCLP, we have 2 different ways to install, UEFI & Legacy/MBR. A Legacy BIOS install can have better reliability and less driver issues for 2013 and older Macs.

For Late 2013-2015 Unsupported Macs you can install Windows 10 UEFI.
Part #1 Install Windows 10 UEFI & Dual Boot OCLP macOS Monterey with Bootcamp!

0:00 Windows 10 Legacy BIOS Install Welcome and intro
0:20 Notes & Requirements + Backup your data!
1:22 Equipment needed
1:33 Legacy BIOS & GTP Mac Model Support
1:43 Which Windows 10 Install will we use DVD or USB?
2:41 Further explanation install options
3:06 Demonstration Mac is a Mac mini 2010 Dual Boot
3:25 Which version of Windows 10 to download
3:52 Getting a Windows 10 Version to fit on a DVD
5:13 Creating Windows 10 Install DVD
6:26 Plug in USB Drive for Formatting
9:05 If you get Bootcamp Windows 10 Installation files not detected error
12:15 Bootcamp Partition done - Reboot - Hold down OPTION key
12:26 Holding down option key - Boot Picker Menu
13:01 Selecting “Windows” USB or DVD icon to boot Windows 10 Installer
13:20 Starting Windows 10 Legacy BIOS Version installer
14:04 1st Reboot from installer Hold down OPTION Key Select “Windows” HD Icon
14:36 2nd Reboot from installer Hold down OPTION Key Select “Windows” HD Icon
14:56 Windows 10 Install Successful! We are at the setup assistant
15:03 Windows 10 Desktop - Installing Bootcamp Drivers from USB Drive
16:00 Bootcamp driver install finished, eject DVD and Set Default HD after reboot
16:37 Fixing speaker input and connecting to wifi
17:02 Running Windows 10 Software Update
17:19 Back after installing Windows 10 Updates & Feature Update
17:41 Running Apple Software Update to update Bootcamp drivers
17:49 If Apple Software Update App crashes on load error
18:27 Installing Bootcamp updates
18:54 Back up after installing Bootcamp drivers
19:00 Bootcamp reboot to macOS feature does not work - How to boot to macOS
20:01 Windows 10 End of life & Windows 11

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This video is for installing Windows 10 Legacy BIOS so you can dual boot an unsupported OCLP Mac with macOS Big Sur or Monterey.

BACKUP UP ALL DATA before you begin. This is just in case, what we are doing will retain all your data on the OCLP Big Sur or Monterey OS.
You don’t need another Mac or Windows PC to follow the steps in this video!
UPDATES SECTION!
Equipment Needed
1. USB Flash drive - 16GB or Larger
Windows 10 UEFI Compatibility as of December 2021
2011-2012 have basic UEFI compatibility. The install does work, but you might have some issues like BSOD & Driver issues.
2013-2014 models support both EFI and BIOS. Mid 2013 MBPro Bootcamp installs BIOS by default. Late 2013 & 2014 installs EFI by default.
2015 and later install & support EFI by default and are fully UEFI-compliant.

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[xtrasoc]

Thank you! Installation of Ventura and Windows10 bootcamp went perfect on an 2009 imac8, 1 we picked up for $35. A 2009 imac is running with full 2023 features and security patches for both Mac OS and Windows 10. I have full messenger support, and full app compatibility. This is amazing. Note1: SSD required. Originally, the iMac system was unusable with the stock HDD. After upgrading to an older 256GB SSD, I'm able to install and browse most web pages, buy things, do email, study, play some 2010 era games, etc. Note2: Venture is the newest usable OS for my model. Even with SSD, Sonoma was too slow to be usable, so I had to downgrade to Ventura. Note3: the imac8, 1 model had a built in DVD, which per this great video, needs a Windows DVD install. The hardest part of the bootcamp install in 2023 was sourcing the smallest possible pack of blank DVDs and a cheap $20 dvd burner. Note4: The Boot menu is a bit confusing, in that the bootcamp partition only boots from the initial (native built in) Apple bios boot menu, but Ventura boots from the secondary (chain loaded) OpenCore boot menu. First time I did the boot camp install, the Ventura OS booted and the apple progress bar froze at 40%. I assumed I botched the install, and redid everything, but perhaps it was just me choosing windows from the wrong boot loader. Note5: Specs are good. The 4GB ram was good enough for both Ventura and Windows 10. No issues thus far. I don't see swap usage with my workloads. The SATA 2 interface is fast enough; specifically the HDD bottleneck appears to be the HDD random access read speeds, which, per CrystalDiskMark, were 2 orders of magnitude slower than SSD.

[anonymous]

Pov: the video releases 2h before you need it


Thanks for your amazing work. You have saved me so much time and effort :) Keep up the good work.

[Fijuin]

I have for the better of 3 days, been trying to dual boot my mid 2012 opencore monterey with windows 10. Each time, it just kept failing. That was till I followed your tutorial step by step, thank you so much for making these videos. Keep up the amazing work!

[JonTrott]

That bogus old saying "Those who can't do, teach".... You disprove that right here, and in your other videos. Extremely helpful.

[pouriatolouei]

You’re an absolute life saver. OCLP’s guide wasn’t working for me and it was a bit complicated. But your guide was very straightforward and the installation went very smoothly on my 2012 Mac Mini. Thanks a bunch :)

[edwardmiszkiewicz]

Thank you for this tutorial! While I didn't use the methods described here in detail, it helped to identify the issue with installing Windows 10 on a 2012 Macbook (the optical ISO solution which supports legacy BIOS/MBR installations). After using another tool (gdisk) to create a set of hybrid GPT/MBR partitions on the SSD drive, I was finally able to complete an non-EFI installation of Windows 10. This allowed the integrated graphics drivers to work properly (as well as audio). Thanks again!

[myket]

I was able to upgrade my mid-2012 MacBook Pro running Patched Sur to Monterey 12.3.1 using OCLP without any problems... Even the Windows 11 Bootcamp was intact and works perfect... Thanks Mr. Mac for another great tutorial.

[kurtkurdistan]

Perfect tutorial - thx a lot. First I managed to install Monterey on my 2010 MBP following your tutorial and now Win 10. I even managed to upgrade to Win 11 and it works perfectly on a 12 / 13 year old MBP. Thx again!

[byronv]

FINALLLYYY im having so much trouble these past days staying up trying to figure it out

[Bernhaa]

You can use Rufus or Hasleo WintoUSB to make an external Windows installation. Works great! I have a dvd caddy and now I have a 240gb external SSD with Windows 10 and I can play games. Thanks for sharing all of this information. Obviously you have to select MBR/Legacy installation to make it work. Hasleo only made a Home Edition, but Rufus can select a Pro Edition and lets you make the Windows Boot MBR and UEFI (this type of partition it's on another partition of the drive).

[jacekfrankowski]

If you can't install Windows on partition you should return to macOS, then do following steps:
Once you open up Disk Utility, you will "Erase" the BOOTCAMP partition and set the format to MAC OS EXTENDED (JOURNALED), once the "Erase" and re-formatting are done, restart your mac. Hold down the "Option" key as the macbook powers on, then select as at first try. From there the Windows logo should appear and then you'll be prompted to select language and Windows version (i.e. Home, Education, Pro), skip the activation key section then on the next window where you select the partition to install in, you should see several option. You should see the "Unallocated Space" partition with only 128Mb, but it is obviously too small to install Windows on, so you will need to delete the "BOOTCAMP" partition which should have just about as much space as you allowed for your Windows install. Select "BOOTCAMP" (or whatever you renamed it when in Disk Utility) and press delete, this will add all that storage to the "Unallocated Space". You should now be able to install Windows.

Thank you!!! Finally I could install Windows 10 through Bootcamp in a A1181.

[Aem]

Hello Mr Macintosh. I love your tutorial guides.

I followed you and installed MacOS Sonoma with your video to my Macbook Pro mid-2010. But in this Windows 10 tutorial with Bootcamp, at 13:53 of video, it gives error. And it says: Your partition is MBR and Windows needs GPT to continue, something like this. And i can’t do anything. I formatted it via “eraser” logo button in installer but it did nothing too. I am researching for 1 full day and i get nothing.

What i need to do? Thanks.

[dusan]

Ciao, I downloaded the iso file for DVD, burn it, boot MBR Windows in boot section, installed, updating, audio and external monitor finally works, and now I am suprised … thank you very much, you have made such a good video … 👍 MacBookPro 9, 2 (2012) with external optical drive

[clubmedparty]

Hello Mr.Macintosh, I followed all the steps on my 2011 13in Macbook Pro minus the dvd option, using a flash drive, everything went through smooth until i got to the WIndows install, there is an error that came up "Windows can't be installed on drive 0 partition 3. Drive 0 Partition 1 is 200 MB, Drive 0 Partition 2 is the Open Legacy 13.3 with 130.4GB and Drive 0 Partion 3 is the Bootcamp with 107.9GB. Any suggestions? On the details is says: Windows cannot be installed to this disk. The selected disk has an MBR partiton table. On EFI systems, Windows can only be installed to GPT disk. I'm a newbie and need a little help...Thank you in advance.

[danimourinho]

I have a MacBook Pro 13-Inch "Core 2 Duo" 2.4 Mid-2010. I had a lot of problems to install windows 10 on it due an issue with the GPU drivers (Geforce 320M). The only way I managed to install it is using Bootcamp; Install windows 7 and then keep updating it with Windows update until get the latest windows 10 update. An annoying and slow proccess. I tried also to install windows 11 but I had the same problem. If you know a solution it would be awesome if you could do a video showing how to install windows 10 and 11 in this specific model. Thanks in advance!

[chaiwat]

That's really work and help me after walkthru steps by steps. I got it finally. Really appreciate your sharing.

[wannafuss]

Follow step by step and it WORKS LIKE CHARM 👌 on my MBP 13" mid 2010, stick on Monterey and patiently waiting for an OCLP update to fix the minor bug, ie; Maps, Location, Photo Boot. Thank you for all the hard work to putting this together 🙏

[jttasb]

I got all the way to 13:00 but no DVD option presents itself. I have previously replaced the superdrive with an aftermarket dvd-bluray combo drive. When my disc appeared the icon was actually a yellow usb looking thing. When selected it did run the optical drive. But then when it got to "where do you want to install Windows", drive 0 partition 3 BOOTCAMP has a message "Windows can't be installed on drive 0 partition 3 (Show details) because it is APFS I think. I wish that would have been mentioned at the start of the video. When 'show details' is clicked the message reads: "Windows cannot be installed to this disk. The selected disk is of the GPT partition style." Bummer.

[PixlPirate]

For some reason I see people all the time in different tutorials talking about using Boot Camp Assistant with a usb thumb drive but if I have a thumb drive plugged in, I always get the error "Please remove any external storage device attached to this system before continuing." and I can't continue unless I unplug my thumb drive so I can't get to that next screen