Windows 11 change UEFI BIOS Boot priority


Megahertz

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Brazil
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Windows 7 HP 64 - Windows 11 Pro - Lubuntu
So I decided to give another try on Win 11.
Made a Win 10 drive image backup and then did a Win 10 to Win 11 upgrade.
I have two main SSD drives : One has Win 7 and Lubuntu and another has Win 11. Both are UEFI-GPT and are independent. There is another HDD for data only that is part of Win 7.
1654029517657.png

On BIOS my priority boot is Win 7. When I want to use Win 11 or Lubuntu I launch the boot menu (F12) during POST and choose Win 11 or Lubuntu.
But now when I exit Win 11, Win 11 is the first BIOS boot option. I have to enter BIOS to change the Boot priority back to Win 7.
Never had any issues with Lubuntu or Win 10.

Does someone has seen the same on their computer?
Does someone knows how to set Win 11 so it doesn't change BIOS boot priority?
 
Windows Build/Version
Win 11 22000-675

My Computers

System One System Two

  • OS
    Windows 7 HP 64 - Windows 11 Pro - Lubuntu
    Computer type
    PC/Desktop
    Manufacturer/Model
    custom build
    CPU
    i5 6600K - 800MHz to 4400MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Win 10
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64
  • Operating System
    Windows 7 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Asus Q550LF
    CPU
    i7-4500U 800- 3000MHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs
    & 1T HDD for data
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64

CountMike

Well-known member
Power User
VIP
Local time
6:06 AM
Posts
756
OS
W10 and Insider Dev.+ Linux Mint
So I decided to give another try on Win 11.
Made a Win 10 drive image backup and then did a Win 10 to Win 11 upgrade.
I have two main SSD drives : One has Win 7 and Lubuntu and another has Win 11. Both are UEFI-GPT and are independent. There is another HDD for data only that is part of Win 7.
View attachment 30472

On BIOS my priority boot is Win 7. When I want to use Win 11 or Lubuntu I launch the boot menu (F12) during POST and choose Win 11 or Lubuntu.
But now when I exit Win 11, Win 11 is the first BIOS boot option. I have to enter BIOS to change the Boot priority back to Win 7.
Never had any issues with Lubuntu or Win 10.

Does someone has seen the same on their computer?
Does someone knows how to set Win 11 so it doesn't change BIOS boot priority?
BIOS/UEFI is not actually changed, it only reads first usable BOOT sector on first disk it finds.
You have few options to change that. One is to swap places for disks 1 and 3 so 3 is first SATA port.
Even handier way I use is EasyBCD installed in first BOOT-able OS (default in BIOS) which is of great help to make a BOOT menu to chose which OS to start. When you start your PC it will display a menu to choose OS. Don't have to fiddle with BIOS settings. That could be done from Msconfig too but this is easier. Program doesn't have to be resident, once you set everything it could be uninstalled.
 

My Computer

System One

  • OS
    W10 and Insider Dev.+ Linux Mint
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home brewed
    CPU
    AMD Ryzen 7 5800x
    Motherboard
    Asus Prime x470 Pro
    Memory
    2x8GB Kingston 3600MHz, Cl 16
    Graphics Card(s)
    Asus ROG Rx 570 OC, 4GB
    Sound Card
    MB, Realtek Ac1220p
    Monitor(s) Displays
    2 x 28"
    Screen Resolution
    1080p
    Hard Drives
    Samsung 970 evo Plus 500GB, Samsung 960 evo250GB, 3x SSD SATA 2.5" 250GB, WD 2TB HDD.
    Cooling
    Arctic Liquid Freezer II 360mm
    Internet Speed
    20/19 mbps

Megahertz

Wish to be flying
Member
VIP
Thread Starter
Local time
1:06 AM
Posts
72
Location
Brazil
OS
Windows 7 HP 64 - Windows 11 Pro - Lubuntu
Sorry Mike, but that is not the way of a boot sequence, specially on a UEFI - GPT where there is no BOOT sector.

UEFI BIOS looks for Boot managers on the EFI Fat 32 partition of the drives.
BIOS has a priority list and this list is being changed by Win 11
 

My Computers

System One System Two

  • OS
    Windows 7 HP 64 - Windows 11 Pro - Lubuntu
    Computer type
    PC/Desktop
    Manufacturer/Model
    custom build
    CPU
    i5 6600K - 800MHz to 4400MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Win 10
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64
  • Operating System
    Windows 7 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Asus Q550LF
    CPU
    i7-4500U 800- 3000MHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs
    & 1T HDD for data
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64

CountMike

Well-known member
Power User
VIP
Local time
6:06 AM
Posts
756
OS
W10 and Insider Dev.+ Linux Mint
Sorry Mike, but that is not the way of a boot sequence, specially on a UEFI - GPT where there is no BOOT sector.

UEFI BIOS looks for Boot managers on the EFI Fat 32 partition of the drives.
BIOS has a priority list and this list is being changed by Win 11
Whatever it's called, that's what BIOS looks for but does order change just because OS is booted from ?
 

My Computer

System One

  • OS
    W10 and Insider Dev.+ Linux Mint
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home brewed
    CPU
    AMD Ryzen 7 5800x
    Motherboard
    Asus Prime x470 Pro
    Memory
    2x8GB Kingston 3600MHz, Cl 16
    Graphics Card(s)
    Asus ROG Rx 570 OC, 4GB
    Sound Card
    MB, Realtek Ac1220p
    Monitor(s) Displays
    2 x 28"
    Screen Resolution
    1080p
    Hard Drives
    Samsung 970 evo Plus 500GB, Samsung 960 evo250GB, 3x SSD SATA 2.5" 250GB, WD 2TB HDD.
    Cooling
    Arctic Liquid Freezer II 360mm
    Internet Speed
    20/19 mbps

NavyLCDR

Well-known member
Power User
VIP
Local time
9:06 PM
Posts
917
OS
Windows 11
It is not Windows 11 that is changing the boot priority order - it is the UEFI firmware doing it.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    AMD Ryzen 7 3800XT
    Motherboard
    ASUS ROG Crosshair VII Hero (WiFi)
    Memory
    32GB
    Graphics Card(s)
    EVGA GeForce GTX 1080 Ti
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 7773
    CPU
    Intel i7-8550U
    Memory
    32GB
    Graphics card(s)
    Nvidia Geforce MX150
    Sound Card
    Realtek
    Monitor(s) Displays
    17"
    Screen Resolution
    1920 x 1080
    Hard Drives
    Toshiba 512GB NVMe SSD
    SK Hynix 512GB SATA SSD
    Internet Speed
    Fast!

CountMike

Well-known member
Power User
VIP
Local time
6:06 AM
Posts
756
OS
W10 and Insider Dev.+ Linux Mint
It is not Windows 11 that is changing the boot priority order - it is the UEFI firmware doing it.
I also had triple BOOT, W11W11 insider dev (W10 before this one) and had Linux Mint, each on own disk but it never changed even when when I choose from BIOS.
 

My Computer

System One

  • OS
    W10 and Insider Dev.+ Linux Mint
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home brewed
    CPU
    AMD Ryzen 7 5800x
    Motherboard
    Asus Prime x470 Pro
    Memory
    2x8GB Kingston 3600MHz, Cl 16
    Graphics Card(s)
    Asus ROG Rx 570 OC, 4GB
    Sound Card
    MB, Realtek Ac1220p
    Monitor(s) Displays
    2 x 28"
    Screen Resolution
    1080p
    Hard Drives
    Samsung 970 evo Plus 500GB, Samsung 960 evo250GB, 3x SSD SATA 2.5" 250GB, WD 2TB HDD.
    Cooling
    Arctic Liquid Freezer II 360mm
    Internet Speed
    20/19 mbps

NavyLCDR

Well-known member
Power User
VIP
Local time
9:06 PM
Posts
917
OS
Windows 11
I also had triple BOOT, W11W11 insider dev (W10 before this one) and had Linux Mint, each on own disk but it never changed even when when I choose from BIOS.
Some firmwares change boot priorities and some don't. I have a desktop computer and if I mess with the BCD on the default EFI System Partition, when I reboot, the UEFI firmware detects the change and will boot into my secondary EFI partition which is on my rescue drive and boot into my custom rescue environment. I have to go back into UEFI settings and reset the desired EFI System Partition as first in the list again. But it is entire a function of the firmware - Windows 11 is not doing it.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    AMD Ryzen 7 3800XT
    Motherboard
    ASUS ROG Crosshair VII Hero (WiFi)
    Memory
    32GB
    Graphics Card(s)
    EVGA GeForce GTX 1080 Ti
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 7773
    CPU
    Intel i7-8550U
    Memory
    32GB
    Graphics card(s)
    Nvidia Geforce MX150
    Sound Card
    Realtek
    Monitor(s) Displays
    17"
    Screen Resolution
    1920 x 1080
    Hard Drives
    Toshiba 512GB NVMe SSD
    SK Hynix 512GB SATA SSD
    Internet Speed
    Fast!

Megahertz

Wish to be flying
Member
VIP
Thread Starter
Local time
1:06 AM
Posts
72
Location
Brazil
OS
Windows 7 HP 64 - Windows 11 Pro - Lubuntu
I also have Lubuntu. Every time it does a core upgrade it rebuilt the Grub boot loader script (update-grub) and it changes the BIOS priority to Lubuntu.
I will find out what is done under Lubuntu to see if I can block the changes in Lubuntu and Win 11
 

My Computers

System One System Two

  • OS
    Windows 7 HP 64 - Windows 11 Pro - Lubuntu
    Computer type
    PC/Desktop
    Manufacturer/Model
    custom build
    CPU
    i5 6600K - 800MHz to 4400MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Win 10
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64
  • Operating System
    Windows 7 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Asus Q550LF
    CPU
    i7-4500U 800- 3000MHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs
    & 1T HDD for data
    Internet Speed
    350 Mb/s
    Browser
    Firefox 64

NavyLCDR

Well-known member
Power User
VIP
Local time
9:06 PM
Posts
917
OS
Windows 11
I also have Lubuntu. Every time it does a core upgrade it rebuilt the Grub boot loader script (update-grub) and it changes the BIOS priority to Lubuntu.
I will find out what is done under Lubuntu to see if I can block the changes in Lubuntu and Win 11
More evidence that it is the UEFI firmware itself changing things, and not the OS.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    AMD Ryzen 7 3800XT
    Motherboard
    ASUS ROG Crosshair VII Hero (WiFi)
    Memory
    32GB
    Graphics Card(s)
    EVGA GeForce GTX 1080 Ti
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 7773
    CPU
    Intel i7-8550U
    Memory
    32GB
    Graphics card(s)
    Nvidia Geforce MX150
    Sound Card
    Realtek
    Monitor(s) Displays
    17"
    Screen Resolution
    1920 x 1080
    Hard Drives
    Toshiba 512GB NVMe SSD
    SK Hynix 512GB SATA SSD
    Internet Speed
    Fast!
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