Windows 24h2 to old pc's. Can i install it? And how?


Gregory

Well-known member
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Windows 7 sp1
The classic question there is even before it official released.

Now this build official released(1 oct 2024) what is happening?

Do we have any news about installation to an old pc's without sse4.2 cpu???

I have made this question again to other topics but never receive a clear answer yes or no? I always receive mostly no and some tell me that maybe you can install it to an old pc's with some bypass methods.

I hope released an option to remove/bypass this new protection/filter
 

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
a system with a CPU that doesnt have SSE4.2 wont be able to upgrade to Win 11 24H2.

sorry for the bad news and there is no work around at this time.
best of luck. Steve ..
 

My Computers

System One System Two

  • OS
    Win 11 Home 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP 24" AiO
    CPU
    Ryzen 7 5825u
    Motherboard
    HP
    Memory
    64GB DDR4 3200
    Graphics Card(s)
    Ryzen 7 5825u
    Sound Card
    RealTek
    Monitor(s) Displays
    24" HP
    Hard Drives
    1TB WD Blue SN580 M2 SSD Partitioned.
    250GB C:/Windows .. 750GB D:/Home.
    2x 1TB USB HDD External Backup/Storage.
    Internet Speed
    900MB full fibre
    Browser
    Vivaldi .. Browser, Calendar, eMail.
    Antivirus
    AVG Internet Security
    Other Info
    Mainly Open Source Software
  • Operating System
    Windows 11 Home 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP 24" AiO
    CPU
    Ryzen 5 5500u
    Motherboard
    HP
    Memory
    32GB DDR4 3200
    Graphics card(s)
    AMD Radeon GPU
    Sound Card
    RealTek
    Monitor(s) Displays
    HP
    Hard Drives
    1TB WD blue SN580 M2 SSD Partitioned.
    250GB C:/Windows .. 750GB D:/Home.
    2x 1TB HDD External Backup/Storage.
    Internet Speed
    900MB Full Fibre
    Browser
    Microsoft Edge
    Antivirus
    AVG Internet Security
    Other Info
    Mainly Windows Software
    'The Wife's Computer'
And what is happening with old pc's installed older win11 builds like for example 23h2??
Can't you update to 24h2?
 

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
And what is happening with old pc's installed older win11 builds like for example 23h2??
Can't you update to 24h2?

Most likely, but again it depends on if the CPU has SSE4.2
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 Build: 26100.1742
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 - 2 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
I make this question/topic for cpu doesn't have sse4.2. If it has sse4.2 there is no point to create this topic.

And this is the title of this topic.
 

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
I don't know how many times it needs to be repeated. While you can trick Setup to install 24H2 on a non-SSE 4.2 PC, it won't boot and run.
You can keep asking for the next 12 months, but the answer won't change.
 

My Computer

System One

  • OS
    Windows 7
For these tell us we cannot install win11 24h2 to old cpu's without sse4.2.

There was wrong and we can install or update to any pc system even without cpu sse4.2.
The solution is simply replace the file "source\install.esd" from the 23h2 with the 24h2.

And yes we can install win11 24h2 to any pc system as old it is.

And we can do that to the future versions of win11 simply replace the file "install.esd".
 
Last edited:

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
Intel has had SSE 4.2 for about 16 years now as it was introduced in their Nehalem architecture, AMD has had it for about 13 years.

If it's older than that, I don't the think Win11 can run on it and at least not without CPU stuck at 100% usage all the time.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    AMD 5900X
    Motherboard
    MSI X570 Tomahawk
    Memory
    GSkill Trident 3600 Hz 32GB
    Graphics Card(s)
    AMD RX 570 4GB Version
    Screen Resolution
    2560x1440
    PSU
    XPG Core Reactor 850W
    Case
    Corsair 5000D Airflow
    Cooling
    NH-D15
    Mouse
    G502 Hero Wired
    Browser
    Firefox
For these tell us we cannot install win11 24h2 to old cpu's without sse4.2.

There was wrong and we can install or update to any pc system even without cpu sse4.2.
The solution is simply replace the file "source\install.esd" from the 23h2 with the 24h2.

And yes we can install win11 24h2 to any pc system as old it is.

And we can do that to the future versions of win11 simply replace the file "install.esd".
Boot up 24H2 on a non-SSE 4.2 system. And post a HWiNFO screen capture to confirm your CPU model. As I've repeated many times, you can get 24H2 installed using different tricks.

But it doesn't run when booted. Otherwise many people would have proudly shared their desktops by now. You can be the first.
 

My Computer

System One

  • OS
    Windows 7
we can install or update to any pc system even without cpu sse4.2.
The solution is simply replace the file "source\install.esd" from the 23h2 with the 24h2.

And yes we can install win11 24h2 to any pc system as old it is.
Yes, you can install 24H2 on a machine without SSE4.2 or the PopCnt instruction. What you can't do is get 24H2 to boot. It will fail at the first reboot after the initial install has completed.

Bree said:
...It won't boot - just gets as far as the Windows logo before it fails and reboots, doesn't even get as far as the spinning circle.
Let's install Windows 11 on incompatible hardware - post #1,917
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Internet Speed
    50 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, and 24H2 on 3rd October through Windows Update by setting the Target Release Version for 24H2.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package. In-place upgrade to 24H2 using hybrid 23H2/24H2 install media. Also running Insider Beta, Dev, and Canary builds as a native boot .vhdx.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.
Tough audience.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 Build: 26100.1742
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 - 2 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
I believe it can boot.
I try it to a pc(with cpu sse4.1) at the next days and tell you results.
 

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
I believe it can boot.
I try it to a pc(with cpu sse4.1) at the next days and tell you results.

I think we are extremely fortunate to have someone like you who can correct everyone in here with their misguided understandings about Windows, hardware, Microsoft and how it all works.
Thank you for being a pioneer!
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 Build: 26100.1742
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 - 2 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
Please stop the erony.
I just simply said what I believe.
I thought we can tell our opinion and this site is a democratic site.
 

My Computer

System One

  • OS
    Windows 7 sp1
    Computer type
    PC/Desktop
    Browser
    Firefox
Please stop the erony.
I just simply said what I believe.
I thought we can tell our opinion and this site is a democratic site.
The whole thread is full of people trying really hard to tell you the facts. You refuse to listen, it’s kind of insulting.

But sure you can believe if you want to. (y) 🙏
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 Build: 26100.1742
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 - 2 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
I believe it can boot.
I try it to a pc(with cpu sse4.1) at the next days and tell you results.
This actually might be interesting, whichever way it turns out. Please tell us your results, even if it was not what you had hoped for.

SSE4.1 does include the PopCnt instruction, as does AMD's SSE4a. Initially PopCnt was the only requirement for Insider builds of 24H2, it was only later that MS raised the bar to SSE4.2 as a minimum requirement. Whether the true requirement is the full SSE4.2 instruction set, or just the PopCnt instruction has yet to be tested (at least, by me - I don't have any suitable CPUs to test that).
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Internet Speed
    50 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, and 24H2 on 3rd October through Windows Update by setting the Target Release Version for 24H2.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package. In-place upgrade to 24H2 using hybrid 23H2/24H2 install media. Also running Insider Beta, Dev, and Canary builds as a native boot .vhdx.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.
This actually might be interesting, whichever way it turns out.

SSE4.1 does include the PopCnt instruction, as does AMD's SSE4a. Initially PopCnt was the only requirement for Insider builds of 24H2, it was only later that MS raised the bar to SSE4.2 as a minimum requirement. Whether the true requirement is the full SSE4.2 instruction set, or just the PopCnt instruction has yet to be tested (at least, by me - I don't have any suitable CPUs to test that).

GitHub - albertony/instructionsets: InstructionSets is a command line utility for listing instructions and instruction sets used by an executable file, optionally matching against the current CPU features.
Code:
Microsoft Windows [Version 10.0.26100.2033]
(c) Microsoft Corporation. All rights reserved.

C:\Windows\System32>\Users\GARLIN\Downloads\InstructionSets64.exe boot\winload.efi
call
branch_relative
mode64
ret
int
jump
sse1
cmov
sse2
privilege
bmi
fpu
>> sse42 <<
ssse3
sha
aes
pclmul
avx
novlx
avx2
sse41
bmi2
iret
vm

C:\Windows\System32>\Users\GARLIN\Downloads\InstructionSets64.exe winload.exe
call
branch_relative
mode64
ret
int
jump
sse1
sse2
cmov
privilege
>> sse42  <<
ssse3
sha
aes
pclmul
avx
novlx
avx2
sse41
bmi2
bmi
iret
vm
 

My Computer

System One

  • OS
    Windows 7
You guys should read the sticky thread "Let's install Windows 11 on unsupported computers", it has been discussed there (and in some other threads). You can cheat and install 24H2 on a very old computer without SSE4.2, BUT you cannot boot with the new 24H2 bootloader. It will stuck at the familiar blue Windows logo without even the spinning curves. What I am thinking to try but haven't found the time yet, is to use a hybrid 23H2/24H2 USB flash drive to do a clean install. This uses the old 23H2 Setup without requirement for SSE4.2 to install 24H2 instead. So provided you bypass compatibility check in general, this will proceed and complete the first stage (copy the files to disk). The problem is what about restart? It will obviously try to use the 24H2 bootloader and get stuck. What if I interrupt normal restart and boot from the hybrid 23H2/24H2 again? I will replace the 24H2 bootloader with the 23H2 by using the bcdboot command (I don't remember the syntax now) and this should allow it to boot. The question is what happens next? If any part of the second stage tries to use a system file requiring 24H2 it will hang, but I want to check it anyway. If anyone has more free time and tests it, please post results. In the VERY lucky case that it won't hang and tries to restart for the final stage, needless to say that you have to interrupt it and replace the bootloader again. Every time it tries to restart (assuming it doesn't hang somewhere), you must always replace the bootloader until, fingers crossed, you finally see the OOBE screen. If anyone tries it, please post results here, or even better in the "Let's install Windows 11 on unsupported computers" thread.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 (build 22631.4249) test laptop, Windows 11 Pro v24H2 (build 26100.2161) main PC
    Computer type
    Laptop
    Manufacturer/Model
    Acer Extensa 5630EZ
    CPU
    Mobile DualCore Intel Core 2 Duo T7250, 2000 MHz
    Motherboard
    Acer Extensa 5630
    Memory
    4GB
    Graphics Card(s)
    Mobile Intel(R) GMA 4500M (Mobile 4 series)
    Sound Card
    Realtek ALC268 @ Intel 82801IB ICH9 - High Definition Audio Controller
    Monitor(s) Displays
    1
    Screen Resolution
    1280x800
    Hard Drives
    Samsung SSD 850 EVO 250GB SATA Device (250 GB, SATA-III)
    Internet Speed
    VDSL 50 Mbps
    Browser
    MICROSOFT EDGE
    Antivirus
    WINDOWS DEFENDER
    Other Info
    Legacy MBR installation, no TPM, no Secure Boot, no WDDM 2.0 graphics drivers, no SSE4.2, cannot get more unsupported ;) This is only my test laptop. I had installed Windows 11 here before upgrading my main PC. For my main PC I use everyday see my 2nd system specs.
  • Operating System
    Windows 11 Pro v24H2 (build 26100.2161)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom-built PC
    CPU
    Intel Core-i7 3770 3.40GHz s1155 (3rd generation)
    Motherboard
    Asus P8H61 s1155 ATX
    Memory
    2x Kingston Hyper-X Blu 8GB DDR3-1600
    Graphics card(s)
    Gainward NE5105T018G1-1070F (nVidia GeForce GTX 1050Ti 4GB GDDR5)
    Sound Card
    Realtek HD audio (ALC887)
    Monitor(s) Displays
    Sony Bravia KDL-19L4000 19" LCD TV via VGA
    Screen Resolution
    1440x900 32-bit 60Hz
    Hard Drives
    WD Blue SA510 2.5 1000GB SSD as system disk, Western Digital Caviar Purple 4TB SATA III (WD40PURZ) as second
    PSU
    Thermaltake Litepower RGB 550W Full Wired
    Case
    SUPERCASE MIDI-TOWER
    Cooling
    Deepcool Gamma Archer CPU cooler, 1x 8cm fan at the back
    Mouse
    Sunnyline OptiEye PS/2
    Keyboard
    Mitsumi 101-key PS/2
    Internet Speed
    100Mbps
    Browser
    Microsoft Edge, Mozilla Firefox
    Antivirus
    Microsoft Windows Defender
    Other Info
    Legacy BIOS (MBR) installation, no TPM, no Secure Boot, WDDM 3.0 graphics drivers, WEI score 7.4
I believe it can boot.
I try it to a pc(with cpu sse4.1) at the next days and tell you results.
If you can install 24H2 on a machine that has a CPU without SSE4.2, then successfully boot it, and prove it to my satisfaction, I will send you licenses for 2 years of Microsoft 365 Family, on me.

I guarantee that you cannot do it. There is not one person on the planet who has done so successfully (prove me wrong!).

If you can do it and document how, it would be worth the price of the licenses to learn how you did it :-)
 

My Computers

System One System Two

  • OS
    Win11 Pro 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Kamrui Mini PC, Model CK10
    CPU
    Intel i5-12450H
    Memory
    32GB
    Graphics Card(s)
    No GPU - Built-in Intel Graphics
    Sound Card
    Integrated
    Monitor(s) Displays
    HP Envy 32
    Screen Resolution
    2560 x 1440
    Hard Drives
    1 x 2TB NVMe SSD
    1 x 4TB NVMe SSD
    1 x 4TB 2.5" SSD
    PSU
    120W "Brick"
    Keyboard
    Corsair K70 Mechanical Keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    1Gb Up / 1 Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
  • Operating System
    Win11 Pro 23H2
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkBook 13x Gen 2
    CPU
    Intel i7-1255U
    Memory
    16 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek® ALC3306-CG codec
    Monitor(s) Displays
    13.3-inch IPS Display
    Screen Resolution
    WQXGA (2560 x 1600)
    Hard Drives
    2 TB 4 x 4 NVMe SSD
    PSU
    USB-C / Thunderbolt 4 Power / Charging
    Mouse
    Buttonless Glass Precision Touchpad
    Keyboard
    Backlit, spill resistant keyboard
    Internet Speed
    1Gb Up / 1Gb Down
    Browser
    Edge
    Antivirus
    Windows Defender
    Other Info
    WiFi 6e / Bluetooth 5.1 / Facial Recognition / Fingerprint Sensor / ToF (Time of Flight) Human Presence Sensor
Please stop the erony.
I just simply said what I believe.
I thought we can tell our opinion and this site is a democratic site.
It's irony and SSE4.2 not 4.1.
 

My Computers

System One System Two

  • OS
    Windows 11 build 10.0.26100.2152 RP / WSL 2 running Ubuntu
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 14 5430
    CPU
    Intel i7-1355U
    Motherboard
    Dell 0GMW80
    Memory
    16GB
    Graphics Card(s)
    Intel Iris XE
    Sound Card
    Realtek
    Monitor(s) Displays
    Dell 14" and LG Ultrawide 26"
    Screen Resolution
    1920 x 1200 and 2560 x 1080
    Hard Drives
    Samsung 990 Pro 1TB NVME Gen 4 M.2 SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Keyboard
    Dell KM3322W
    Mouse
    Dell Trackpad or Dell KM3322W
    Internet Speed
    900mb down / 400mb up FTTP
    Browser
    Edge 130.0.2849.52
    Antivirus
    Windows Defender
    Other Info
    Windows 365
    1TB OneDrive
    Outlook Classic
    Visual Studio Code running in WSL
    Python 3.13
    Macrium Reflect X
    Dell TB16 Thunderbolt dock
    WSL
    WEI Score: 8.3
  • Operating System
    Windows 11
    Computer type
    Tablet
    Manufacturer/Model
    Microsoft Surface Pro 7
    CPU
    Core i5 - 1035G4
    Motherboard
    Microsoft
    Memory
    8GB
    Graphics card(s)
    Intel Iris Plus
    Monitor(s) Displays
    Surface touch
    Screen Resolution
    2736 x 1824
    Hard Drives
    128GB
    PSU
    Microsoft
    Case
    Microsoft Keyboard
    Cooling
    None
    Mouse
    Microsoft Arc Intellimouse
    Keyboard
    Microsoft Surface Keyboard
    Internet Speed
    900mb / 400mb FTTP
    Browser
    Edge
    Antivirus
    Windows Defender

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