Dual booting same Disk two Windows OS partitions HOW TO..


Also, the new Dell UEFI BIOS doesn’t detect the SATA HDD , so I cannot set it as a 1st Boot priority.

No need to change boot order in UEFI BIOS.

Why do you have two EFI system partitions?

Just boot in Windows Setup, delete ALL partitions from the SATA HDD and click Next to proceed. The installer does not create a new EFI system partition.
 

My Computer

System One

  • OS
    Windows 11 Pro
У меня два раздела ОС Windows 11 Pro на одном диске.
Боже. Используй EasyBCD и забудь о проблемах.

Все.webp
 

My Computer

System One

  • OS
    Windows 11 Stable, Release Preview, Beta, Dev, Canary
    Computer type
    PC/Desktop
    Manufacturer/Model
    Micro-Star International Co., Ltd. MS-7D54
    CPU
    AMD Ryzen 9 PRO 5950X
    Motherboard
    MSI MAG X570S Tomahawk Max WiFi (MS-7D54) (2 PCI-E x1, 2 PCI-E x16, 2 M.2, 4 DDR4 DIMM, Audio, Video, 2.5GbE LAN, WiFi)
    Memory
    128 Gb
    Graphics Card(s)
    Intel(R) Arc(TM) A380 Graphics (2 ГБ)
    Sound Card
    Устройство с поддержкой High Definition Audio
    Monitor(s) Displays
    HP X34 [34" LCD] (6CM1300J5J) {2021}
    Screen Resolution
    3440x1440
    Hard Drives
    KINGSTON SFYRD2000G (2000 ГБ, PCI-E 4.0 x4)
    PSU
    Be Quiet! Dark Rock Pro 4
    Case
    Cooler Master HAF XB EVO
    Internet Speed
    1000 Mb/s
    Browser
    Chrome
    Antivirus
    Windows Defender
Why don't you simply have your Windows systems on vhdx files and then at boot you'll be presented via the Windows boot manager a choice between the 2 windows systems.

Create ONE single EFI partition (size around 100Mib) format fat32, and then on the rest of the HDD create 2 vhdx files.

plenty of examples on how to do this in these threads so not repeating again - just use the search facility.

Windows boot menu :

MULTIOS.webp
Cheers
jimbo
 

My Computer

System One

  • OS
    Windows XP,7,10,11 Linux Arch Linux
    Computer type
    PC/Desktop
    CPU
    2 X Intel i7
Боже. Используй EasyBCD и забудь о проблемах.

View attachment 123125

Thank you Dronix

If I knew about computers as much as I know history and languages, I wouldn't need to ask for help. But unfortunately I don't . I'll leave it at that, with renewed thanks.

I notice you are from Symferopol in Ukraine. By the way, I do not understand the Russian (or Ukrainian ?) in your post but If you happen to be Tatar, as many Crimeans are, I'll convey my thanks to you for your help in my broken self-taught Turkish.
You may understand, because Turkish and Tatar are very very close.


Bu arada, Rusça (veya Ukraynaca?) anlamıyorum ama eğer Tatar olursanız, birçok Kırımlı gibi, kendi kendime öğrendiğim kırık dökük Türkçemdeki yardımlarınız için size teşekkürlerimi ileteceğim.
Anlayabilirsiniz, çünkü Türkçe ve Tatarca çok çok yakındır.

Teşekkür ederim, büyük Akmescit şehrinden, beyaz Cami'den arkadaşım

Yardımın için teşekkür ederim kardeşim ve Allah senden razı olsun
 

My Computer

System One

  • OS
    windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 3000
    CPU
    12 Gen Intel core i5-12500 3,00 Ghz
    Memory
    16 GB
but If you happen to be Tatar, as many Crimeans are, I'll convey my thanks to you for your help in my broken self-taught Turkish.
I am a Ukrainian by nationality. Will there be no greetings for me? :lmao:
 

My Computer

System One

  • OS
    Windows 11 Stable, Release Preview, Beta, Dev, Canary
    Computer type
    PC/Desktop
    Manufacturer/Model
    Micro-Star International Co., Ltd. MS-7D54
    CPU
    AMD Ryzen 9 PRO 5950X
    Motherboard
    MSI MAG X570S Tomahawk Max WiFi (MS-7D54) (2 PCI-E x1, 2 PCI-E x16, 2 M.2, 4 DDR4 DIMM, Audio, Video, 2.5GbE LAN, WiFi)
    Memory
    128 Gb
    Graphics Card(s)
    Intel(R) Arc(TM) A380 Graphics (2 ГБ)
    Sound Card
    Устройство с поддержкой High Definition Audio
    Monitor(s) Displays
    HP X34 [34" LCD] (6CM1300J5J) {2021}
    Screen Resolution
    3440x1440
    Hard Drives
    KINGSTON SFYRD2000G (2000 ГБ, PCI-E 4.0 x4)
    PSU
    Be Quiet! Dark Rock Pro 4
    Case
    Cooler Master HAF XB EVO
    Internet Speed
    1000 Mb/s
    Browser
    Chrome
    Antivirus
    Windows Defender
Of course I will thank you...and I might add, with the hope that this painful, horrible and tragic war may come to an end as soon as possible.

I read a lot about Ukraine's glorious history and Crimea. The closest I came to Crimea was a few hundreds',km across the Black Sea, in Samsun and Trabzon, today's Turkey . I wanted to have a sense of what Anatolia and the Black Sea, once part of the Greek world and later the Byzantine Empire looked like.
What spurred my interest in this part of the world is that I am Italian and the Graeco-Roman heritage is one of the main facets of our culture. Particularly, the Black Sea and Crimea were for centuries the seat of prosperous Genoese colonies, like Yalta and Caffa in Ukraine ) ( todays Feodosia /Kefe ), along with many other Genoese trading colonies dotting the Black Sea coast, to the point that The Black Sea appeared in some of the Medieval maps " Lacus Genoensis ( the Sea or Lake of Genoa ). Through the centuries there have been several Italian settlement waves, the earliest at the time of the Republic of Genoa and the latest as late as the XIX century, mainly in Kerch , were there is a local Association of about 300 people, who still maintain ties with Italy and the language


I went off the topic, but I thought it may be of interest to you

Gundo
 

My Computer

System One

  • OS
    windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 3000
    CPU
    12 Gen Intel core i5-12500 3,00 Ghz
    Memory
    16 GB
Why don't you simply have your Windows systems on vhdx files and then at boot you'll be presented via the Windows boot manager a choice between the 2 windows systems.
Is there an advantage of installing Windows on a vhdx drive as compared to just installing it to a second drive? I ask because because like the OP, I've had trouble dual booting and Windows trying unsuccessfully to repair it. I had to use Macrium to fix it. I don't know why the boot problem though. The NVMe drive was removed when I installed 24H2 to the SSD so they're not sharing the same boot partition.
 

My Computers

System One System Two

  • OS
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec G156
    CPU
    Intel Core i5-8400 CPU @ 2.80GHz
    Motherboard
    AsusTeK Prime B360M-S
    Memory
    16 MB DDR 4-2666
    Monitor(s) Displays
    23" Speptre HDMI 75Hz
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO 500GB NVMe
    Mouse
    Logitek M185
    Keyboard
    Logitek K270
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    Windows Defender
Is there an advantage of installing Windows on a vhdx drive as compared to just installing it to a second drive? I ask because because like the OP, I've had trouble dual booting and Windows trying unsuccessfully to repair it. I had to use Macrium to fix it. I don't know why the boot problem though. The NVMe drive was removed when I installed 24H2 to the SSD so they're not sharing the same boot partition.
Multiple advantages:

1) No partitioning of disks needed.
2) Super easy to remove that copy of Windows. Should literally take under 30 seconds.
3) Portable - you can easily move the VHD to another system or another drive or partition in the local system.
 

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

My Computers

System One System Two

  • OS
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec G156
    CPU
    Intel Core i5-8400 CPU @ 2.80GHz
    Motherboard
    AsusTeK Prime B360M-S
    Memory
    16 MB DDR 4-2666
    Monitor(s) Displays
    23" Speptre HDMI 75Hz
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO 500GB NVMe
    Mouse
    Logitek M185
    Keyboard
    Logitek K270
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    Windows Defender
Multiple advantages:

1) No partitioning of disks needed.
2) Super easy to remove that copy of Windows. Should literally take under 30 seconds.
3) Portable - you can easily move the VHD to another system or another drive or partition in the local system.
If I continue having trouble dual booting I'll give a vhdx drive a try. So far I haven't had any problems after my last boot repair. It's too soon to know if the problem is permanently fixed. Fingers crossed! ;-)
 

My Computers

System One System Two

  • OS
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Canary Channel
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec G156
    CPU
    Intel Core i5-8400 CPU @ 2.80GHz
    Motherboard
    AsusTeK Prime B360M-S
    Memory
    16 MB DDR 4-2666
    Monitor(s) Displays
    23" Speptre HDMI 75Hz
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 970 EVO 500GB NVMe
    Mouse
    Logitek M185
    Keyboard
    Logitek K270
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    Windows Defender
Multiple advantages:

1) No partitioning of disks needed.
2) Super easy to remove that copy of Windows. Should literally take under 30 seconds.
3) Portable - you can easily move the VHD to another system or another drive or partition in the local system.
Thanks

Sounds interesting I'll try the vhdx drive option , but it is uncharted terrain for me, I'll have to look online how to do it.

Gundo
 

My Computer

System One

  • OS
    windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 3000
    CPU
    12 Gen Intel core i5-12500 3,00 Ghz
    Memory
    16 GB

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