Solved No Operating System Options at boot


I tried to recreate


Hi suatcini54,

Understood. Appreciate it. I will make my system a dual boot. I will delete all EFI partition and then create new one.

Kind regards,

tecknot
One EFI partition is O.K. Because you are repopulating the 2.0 GB partition after formatting it, there should not be any problem. But again please make sure you first add your working Windows to EFI system partition. Reboot and then add the other Windows installation(s).
 

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    Windows 11 Pro build 26300.9807Intel i7-4790Teams DDR3-1600 4x4 GBMSI Nvidia GeForce GTX 1050Ti
    OS
    Windows 11 Pro build 26300.9807
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-4790
    Motherboard
    Asus H97 Pro Gamer with add-on TPM1.2 module
    Memory
    Teams DDR3-1600 4x4 GB
    Graphics Card(s)
    MSI Nvidia GeForce GTX 1050Ti
    Sound Card
    Realtek ALC1150
    Monitor(s) Displays
    Dell P2425D
    Screen Resolution
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    Hard Drives
    Corsair NVMe M.2 Core XT 1000 GB (Windows 11 v.25H2); Samsung SATA Evo 870 500 GB (Windows 11 v.25H2);
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    Case
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    Zalman CNPS7X Tower
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  • At a glance

    MacOS 12 MontereyIntel Core i58 GBIntel integrated
    Operating System
    MacOS 12 Monterey
    Computer type
    Laptop
    Manufacturer/Model
    Apple Macbook Air
    CPU
    Intel Core i5
    Memory
    8 GB
    Graphics card(s)
    Intel integrated
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    1440 by 900 pixels
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    128 GB
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    Built-in
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    802.11 ac
    Browser
    Chrome; Safari
    Antivirus
    N/A
Great success! I got my OS option back and can boot into both OSs.

I want to thank you very much, @suatcini54 for sticking with me and helping me get out and back in.

Kind regards,

tecknot
 

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  • At a glance

    Windows 11 Pro 25H2 build 26300.9725Intel i7 8750H @ 2.2 GHz16 GB (all Samsung) DDR4-3200 SODIMM (non-ECC...Intel UHD Graphics 630 & NVIDIA Quadro P600
    OS
    Windows 11 Pro 25H2 build 26300.9725
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo ThinkPad Workstation P72
    CPU
    Intel i7 8750H @ 2.2 GHz
    Motherboard
    Lenovo 01YU291
    Memory
    16 GB (all Samsung) DDR4-3200 SODIMM (non-ECC) PCIe 3
    Graphics Card(s)
    Intel UHD Graphics 630 & NVIDIA Quadro P600
    Sound Card
    Realtek ALC3286 & Focusrite Saffire 24 Pro DSP
    Monitor(s) Displays
    17.3"
    Screen Resolution
    3840x2160
    Hard Drives
    1TB SSD Samsung 860 EVO SATA 3
    1TB SSD Samsung 970 EVO M.2 NVMe PCIe 3 x 4
    2TB SSD Samsung 990 PRO M.2 NVMe PCIe 3 x 4
    PSU
    230W
    Cooling
    fan
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    UltraNav
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    Kensington wireless Orbit
    Internet Speed
    640Mbps
    Browser
    DuckDuckGo and Firefox
    Antivirus
    Defender
    Other Info
    CM246 Chipset
  • VM with Windows 11 26H2 b 26300.9725: 4 GB (all Samsung) DDR4-3200 SODIMM (non-ECC) PCIe 3; 150GB on SSD Samsung 990 PRO M.2 NVMe PCIe 3 x 4
@tecknot Glad to have been able to help.

Happy computing.
 

My Computers My Computers

  • At a glance

    Windows 11 Pro build 26300.9807Intel i7-4790Teams DDR3-1600 4x4 GBMSI Nvidia GeForce GTX 1050Ti
    OS
    Windows 11 Pro build 26300.9807
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-4790
    Motherboard
    Asus H97 Pro Gamer with add-on TPM1.2 module
    Memory
    Teams DDR3-1600 4x4 GB
    Graphics Card(s)
    MSI Nvidia GeForce GTX 1050Ti
    Sound Card
    Realtek ALC1150
    Monitor(s) Displays
    Dell P2425D
    Screen Resolution
    2560 by 1440 pixels
    Hard Drives
    Corsair NVMe M.2 Core XT 1000 GB (Windows 11 v.25H2); Samsung SATA Evo 870 500 GB (Windows 11 v.25H2);
    PSU
    Corsair HX850
    Case
    Gigabyte Solo 210
    Cooling
    Zalman CNPS7X Tower
    Keyboard
    Microsoft AIO Wireless (includes touchpad)
    Mouse
    HP S1000 Plus Wireless
    Internet Speed
    1000 Mb fiber optic
    Browser
    Chrome; MS Edge
    Antivirus
    Windows Defender
  • At a glance

    MacOS 12 MontereyIntel Core i58 GBIntel integrated
    Operating System
    MacOS 12 Monterey
    Computer type
    Laptop
    Manufacturer/Model
    Apple Macbook Air
    CPU
    Intel Core i5
    Memory
    8 GB
    Graphics card(s)
    Intel integrated
    Screen Resolution
    1440 by 900 pixels
    Hard Drives
    128 GB
    Keyboard
    Built-in
    Mouse
    Microsoft Wireless
    Internet Speed
    802.11 ac
    Browser
    Chrome; Safari
    Antivirus
    N/A

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