Remove Win 10 from Win 11/10 dual boot?


CalypsoArt

Active member
Local time
8:17 PM
Posts
47
OS
Windows 11
My laptop (MSI GS75 Stealth 9sf) came with Win 10. Eventually I upgraded to Windows 11 on a second hard drive. I often do that so I can take my time setting up the new system while having access to the working old system. Anyway, It's been a few years and I haven't used the Win10 install in forever. I'd like to remove it/format the drive. If I remember correctly from when I did this way back, (Win 7 to 10) it was problematic deleting the OS install that was used to create the dual boot. I'm not sure if that is still the case? Anyway, can I remove the Win 10 OS and not affect the working 11. And if so, what is the best method?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gbps Download and 35 Mbps Upload
    Browser
    Google Chrome
    Antivirus
    Microsoft Defender and Malwarebytes Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    HP Spectre x360 2in1 14-eu0098nr (2024)
    CPU
    Intel Core Ultra 7 155H 4.8 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Graphics card(s)
    Integrated Intel Arc
    Sound Card
    Poly Studio
    Monitor(s) Displays
    14" 2.8K OLED multitouch
    Screen Resolution
    2880 x 1800
    Hard Drives
    2 TB PCIe NVMe M.2 SSD
    Internet Speed
    Intel Wi-Fi 7 BE200 (2x2) and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender and Malwarebytes Premium
If you have installed Win 11 with the Win 10 drive in place, win 11 is using the Win10 boot manager so you can't remove Win 10 without creating a boot manager for Win 11 on the Win 11 drive.
Please post a whole window Disk Manager image of ALL your drives. Don't forget to expand the columns so we can read them. How to Post a Screenshot of Disk Management
If you have a MiniTool or AOMEI Partition use it instead or Windows disk manager.
 

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
Remove/format your Windows 10 drive. And after this create a new EFI system partition.

- Boot the computer using the Windows 11 USB flash drive.
- On the first screen press SHIFT+F10 to bring up the command prompt.

diskpart
list disk
select disk # (replace # with the number of your Windows 11 disk)
list partition
select partition # (replace # with the number of the Windows 11 partition)
shrink desired=300
create partition efi size=300
format quick fs=fat32
assign letter=z
list partition
list volume (note the volume letter where the Windows 11 is installed)
exit

bcdboot x:\windows /s z: /f uefi

- replace "x" with the volume letter of the Windows 11 partition
- z: is your EFI system partition you assigned above

BCDBOOT copies the boot files from the Windows partition to the EFI system partition and creates the Boot Configuration Data (BCD) store in the same partition.


Difference between the Booting Process with BIOS and the Booting Process with UEFI

Booting Process With BIOS
- When BIOS begins its execution, it first goes for the Power-On Self Test (POST), which ensures that the hardware devices are functioning correctly. After that, it checks for the Master Boot Record in the first sector of the selected boot device. From the MBR, the location of the Boot-Loader is retrieved, which, after being loaded by BIOS into the computer’s RAM, loads the operating system into the main memory.

Booting Process With UEFI
- Unlike BIOS, UEFI doesn’t look for the MBR in the first sector of the Boot Device. It maintains a list of valid boot volumes called EFI System Partitions. During the POST procedure, the UEFI firmware scans all of the bootable storage devices that are connected to the system for a valid GUID Partition Table (GPT), which is an improvement over MBR. Unlike the MBR, GPT doesn’t contain a Bootloader. The firmware itself scans the GPT to find an EFI System Partition to boot from and directly loads the OS from the right partition.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Yoga C940
    CPU
    Intel Core i7-1065G7
    Memory
    16GB
If you have installed Win 11 with the Win 10 drive in place, win 11 is using the Win10 boot manager so you can't remove Win 10 without creating a boot manager for Win 11 on the Win 11 drive.
Please post a whole window Disk Manager image of ALL your drives. Don't forget to expand the columns so we can read them. How to Post a Screenshot of Disk Management
If you have a MiniTool or AOMEI Partition use it instead or Windows disk manager.
Before I go forward with this. The windows disk manager results.
 

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My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
Before I go forward with this. The windows disk manager results.
Please confirm that drive 1 has Win 10 drive 0 has Win 11.

As you can see only drive 1 has the EFI boot manager partition and a recovery partition.
It also has a factory recover partition (20G) that is useless.

Are both drives SSDs?

Open a CMD window as administrator and type:
diskpart
select disk 1
list part
exit
reagentc /info

Please post the results here

I'm thing on the solutions.
Do you have a drive image software like Macrium Reflect or Aomei Backuper?
 
Last edited:

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
Please confirm that drive 1 has Win 10 drive 0 has Win 11.

As you can see only drive 1 has the EFI boot manager partition and a recovery partition.
It also has a factory recover partition (20G) that is useless.

Are both drives SSDs?

Open a CMD window as administrator and type:
diskpart
select disk 1
list part
exit
reagentc /info

Please post the results here

I'm thing on the solutions.
Do you have a drive image software like Macrium Reflect or Aomei Backuper?
Both drives are SSD. One is a Samgsung 980 SSD 1TB, the other a WDC PC SN720 SDAPNTW-1T00.

I don't have drive image software, though I thought there was a free version I used before on my Desktop? I think it came with an SSD I purchased. I used it to partition at some point, but probably removed it.
 

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My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
Please confirm that drive 1 has Win 10 drive 0 has Win 11.
Did drive 1 came from another computer (Dell, HP etc)? If positive, was the original OS Win 7 or Win 8?
You didn't run reagentc /info

There are two options?
Option 1- Create on drive 0 a EFI and a recovery partition and delete EFI, Win 10 and recovery partitions on drive 1
Option 2- Delete the Win 10 partition on drive 1 and clone the Win 11 partition from drive 0 to the win 10 space on drive 1. Clean drive 0 to be used 100% as data drive. I like this because it the partitions will be on the correct order.
Do you see any problem with option 2?
 

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
Please confirm that drive 1 has Win 10 drive 0 has Win 11.
How do I do that? I thought Disk manager would have that info somewhere, but it doesn't.
Did drive 1 came from another computer (Dell, HP etc)? If positive, was the original OS Win 7 or Win 8?
You didn't run reagentc /info
This machine MSI GS75 Stealth has these m.2 slots
1x M.2 SSD slot (SATA), 1x M.2 SSD slot (NVMe PCIe Gen3), 1x M.2 SSD Combo slot (NVMe PCIe Gen3 / SATA)

I believe the Win 10 was in the first NVMe slot. If I remember correctly, I bought the Samsung 980 1T and installed it in the second NVMe/Combo m.2 slot. I think I installed Win 11 on that one. But I don't know which drive that is 0, or 1.

I like option 2 as I want the second drive to be only data. It seems the first priority is to discover which drive is which?

Pardon my ignorance, but in your instructions above, reagentc /info is after Exit which take me out of the CMD window. Where do I run that command?

Figured it out.
1714429265919.png
 
Last edited:

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
How do I do that? I thought Disk manager would have that info somewhere, but it doesn't.
If you click on the drive in Disk management, in properties under the VOLUMES tab, isn’t it all listed in there?
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 Build: 22631.3593
    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 1 x 24" LG M38H 1 x 32" LF6300 TV Monitor 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    2 x WD something Something 8TB HDD's / 2 x WD something Something 4TB HDD's / 1 x EVO 1TB SSD / 2 x QVO 1TB SSD's / 1 x EVO 250 GB SSD / 2 x QVO 1TB (External Hub) / 1 x EVO 1TB (Portable Backup Case)
    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 22621.2215
    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)
    Graphics processor is an Intel Iris Xe
    Sound Card
    optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.
When you took the Disk manager image (post 5) were you running win 10 or win 11?
Boot to Win 11. Open explorer. Does C: has a label or it is the D: drive that has the label Windows?

Open a CMD window as administrator and type:
diskpart
select disk 0
list part
exit
Please post the results here
 

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
If I remember correctly, I bought the Samsung 980 1T and installed it in the second NVMe/Combo m.2 slot. I think I installed Win 11 on that one.

So drive 0 has Windows 11.

And reagentc /info shows that WinRE is enabled, and its location is in partition 2 - C:\Recovery\WindowsRE

Just create a new EFI system partition (see post #4).
 

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My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Yoga C940
    CPU
    Intel Core i7-1065G7
    Memory
    16GB
When you took the Disk manager image (post 5) were you running win 10 or win 11?
Boot to Win 11. Open explorer. Does C: has a label or it is the D: drive that has the label Windows?
1714524534642.png
Open a CMD window as administrator and type:
diskpart
select disk 0
list part
exit
Please post the results here
1714524670872.png
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
So drive 0 has Windows 11.

And reagentc /info shows that WinRE is enabled, and its location is in partition 2 - C:\Recovery\WindowsRE

Just create a new EFI system partition (see post #4).
Thanks for your efforts, and pardon my fears. (I just got this machine running again)

The instructions in post #4 are a bit intimidating for me. I'm reticent to delete boot (EFI) before being able to create one one the C: (disk 0) drive. I'm fearing I'll fail to make one and the machine will be dead. Also, I don't have a USB Win11 boot drive and what is BCDBOOT?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
Again, thanks for the responses. Just so I'm expressing clearly what I was hoping. Ideally, the machine would boot from the Win11 drive, C: on Disk 0, I'd reformat the Win10 D: drive partition on Disk 1, and have the E: Drive partition expand to encompass that new free space.

It has been several years since I did this kind of thing so I'm being extremely cautious as I can't afford to kill this machine again.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
As it is now, the Win 11 needs the win 10 drive to boot.
The instructions aubergine gave on post #4 is to create a EFI partition on drive 0 and bcdboot is to load the boot manager on it
I will simplify the instructions. Boot from win 11, open a CMD window as administrator and type:

diskpart
select volume c
shrink desired=100
create part EFI
format fs=fat32 quick label=EFI
assign letter=U
exit
bcdboot C:\Windows /s U: /f UEFI

Now you should have one more partition (EFI) on drive 0.
Shut down and remove drive 1, enter BIOS and set the priority boot drive to Windows boot manager on drive 0.
You should boot now from Win 11 drive without Win 10 drive.

We will be ready to transfer win 11 to Win 10 drive as discussed on post #8 - option 2
 

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
As it is now, the Win 11 needs the win 10 drive to boot.
The instructions aubergine gave on post #4 is to create a EFI partition on drive 0 and bcdboot is to load the boot manager on it
I will simplify the instructions. Boot from win 11, open a CMD window as administrator and type:

diskpart
select volume c
shrink desired=100
create part EFI
format fs=fat32 quick label=EFI
assign letter=U
exit
bcdboot C:\Windows /s U: /f UEFI

Now you should have one more partition (EFI) on drive 0.
Shut down and remove drive 1, enter BIOS and set the priority boot drive to Windows boot manager on drive 0.
You should boot now from Win 11 drive without Win 10 drive.

We will be ready to transfer win 11 to Win 10 drive as discussed on post #8 - option 2

When you say remove drive 1, do you mean physically remove it from the computer? I'm loathe to disassemble the machine again. Further, I believe the current drive with Win 11 is a newer and faster and think I'd like to keep it there. Where do I find BCDboot?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
Further, I believe the current drive with Win 11 is a newer and faster and think I'd like to keep it there. Where do I find BCDboot?
Execute the commands above. First the Diskpart and then BCDBoot.
BCDBoot is a system tool file.
 

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
Yay! Followed the instructions:
Created the EFI partition as described
Ran BCDboot
Shut down and went into the BIOS. Initially did not see the Samsung drive listed in the boot order. Eventually found where to select the drive to put it into the boot order and now the machine is starting up directly with Win 11.

Can I use Windows Disk Manager to expand Data E: to encompass the other areas of Disk 1? I've done something like that before, but I think I used the Acronis software tool that came with a Crucial drive when I bought it.

1714590142131.png
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Ryzen 5600X
    Motherboard
    ROG STRIX B550-I
    Memory
    16GB 3200
    Graphics Card(s)
    GTX 1060 6GB
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Dual Dell U3014
    Screen Resolution
    2560x1600
    Hard Drives
    Samsung EVO m.2 500GB x2
Windows tools only allow to extend a partition to the right.

As you have 4 partitions to the left of E: and one to the right I would clean the drive, create a new partition and restore E: to the new partition.
or
You can delete the 4 partitions to the left of E: and create a new partition. Delete the partition to the right of E: and extend E: (easy task)
or
You can use a better disk manager like Minitoll that allow you to extend a partition to the left using an unallocated space and also to the right using an unallocated space.
 
Last edited:

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 Win 11
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    (4) -1 BX500 SSD - 128G for Windows 7 and Lubuntu
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500 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
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