Solved Dual boot not working both OS useable, no boot manager


First let me say thanks to everyone helping. Now, I've 4 pics for you this time. Number one, I just pasted the address of the EFI file into File Explorer, I really didn't expected it to work, and as guessed it said C:Efi does not exist. 2. Same as #1, except this was pulled from a cmd line inside of the recovery. I was looking on the Microsoft Support site and someone posted that they did something with the EFI folder and fixed the same problem I have, of course I don't know that for sure. 3. Again taken inside recovery, trying bootrec /rebuildbcd, this says there is no operating system installed.
#4. @jbcarreon123 this pic is for you. I tried the slmgr suggestion, cmd says that''s not a command.
@SIW2 Are you talking about the output pic in post #17? I double checked that is the top of the window. The pic not numbered, is that what you want?
cantEFI.jpg no EFI.jpg no os.jpg slmgr.jpg
 

My Computer

System One

  • OS
    10/11 dual boot
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspirion 3795
    Mouse
    wired
    Internet Speed
    1Gig
    Browser
    Firefox/Chrome
The bootmgr info is missing from your bcdedit output screenshot. that is the important bit.

You can t see it because your cmd screen height buffer is too small.

do this at admin cmd prompt

bcdedit >c:\bcdout.txt

then the details will be in c:\bcdout.txt

Or you can make the buffer bigger

rt click the top of cmd window, select properties and change the numbers

cmd-scrrenbuffer.jpg
 
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My Computers

System One System Two

  • OS
    Win7
    Computer type
    PC/Desktop
    CPU
    i5-8400
    Motherboard
    gigabyte b365m ds3h
    Memory
    2x8gb 3200mhz
    Monitor(s) Displays
    benq gw2480
    PSU
    bequiet pure power 11 400CM
    Cooling
    cryorig m9i
  • Operating System
    win7
    Computer type
    PC/Desktop
    CPU
    pentium g5400
    Motherboard
    gigabyte b365m ds3h
    Memory
    1x8gb 2400
    PSU
    xfx pro 450
The bootmgr info is missing from your bcdedit output screenshot. that is the important bit.

You can t see it because your cmd screen height buffer is too small.

do this at admin cmd prompt

bcdedit >c:\bcdout.txt

then the details will be in c:\bcdout.txt

Or you can make the buffer bigger

rt click the top of cmd window, select properties and change the numbers
Ok, thanks for the guide, My buffer height is 9001 and window size height is 30. Again the cmd you gave me is listed as not a recognized as a cmd. Here is the output from bcdedit, as you can see this is the top. I would like to to the output as I would like to see it also.

Looking at some of the other threads here, I noticed there was a tutorial on dual booting, the author said that we needed to change the name of 11 during install. I didn't notice that it was still labeled 10 until after I got it installed and doing a set up, then I changed it. Could that be causing a problem?

bcdout 1.png
 
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My Computer

System One

  • OS
    10/11 dual boot
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspirion 3795
    Mouse
    wired
    Internet Speed
    1Gig
    Browser
    Firefox/Chrome
Again the cmd you gave me is listed as not a recognized as a cmd.

You didnt enter the cmd I gave you.

There should be a space between bcdedit and >c:\bcdout.txt

Exactly as I posted previously
 

My Computers

System One System Two

  • OS
    Win7
    Computer type
    PC/Desktop
    CPU
    i5-8400
    Motherboard
    gigabyte b365m ds3h
    Memory
    2x8gb 3200mhz
    Monitor(s) Displays
    benq gw2480
    PSU
    bequiet pure power 11 400CM
    Cooling
    cryorig m9i
  • Operating System
    win7
    Computer type
    PC/Desktop
    CPU
    pentium g5400
    Motherboard
    gigabyte b365m ds3h
    Memory
    1x8gb 2400
    PSU
    xfx pro 450
Like this:
C:\Users\User Name> bcdedit >C:\bcdout.txt
 

My Computer

System One

  • OS
    EndeavourOS, Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    custom PC
    CPU
    Core i5 8400
    Motherboard
    Gigabyte B360M-HD3
    Memory
    8gb DDR4-2400
    Graphics Card(s)
    iGPU
    Sound Card
    Realtek
    Monitor(s) Displays
    some generic 1080p 75hz monitor * 2
    Screen Resolution
    1080p * 2
    Hard Drives
    GIGABYTE NVMe SSD 256GB (GP-GSM2NE3256GNTD)
    Internet Speed
    200MBit/s
    Antivirus
    WD
I got it going, YEAH!!!! What I did, I reinstalled 11, when restarting I got the boot mgr screen. I chooose 11, and it failed. So I restarted, clicked settingsOn the sign screen, then turned off the setting for "signed drivers". Then it worked. I haven''t rebooted yet but I think I can get it from here.

Thank you so much to everyone that helped. especially @jcbarron123, @SIW2, because of the patientce they showed, the intelligence they shared, and just being good guys all around.
 

My Computer

System One

  • OS
    10/11 dual boot
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspirion 3795
    Mouse
    wired
    Internet Speed
    1Gig
    Browser
    Firefox/Chrome
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