Solved Upgrading windows 10 to Windows 11 on a dual boot system


S

skcusime

Well-known member
Local time
3:56 AM
Posts
12
OS
Windows 11 24H2
My MBR (Legacy boot) computer doesn't meet Win11 specs so I bought a new system and had my existing Windows 10 system converted to GPT (UEFI) and installed on my new computer as a dual boot with Windows 11.

Snip of management 10.webp

My Windows 10 now shows as upgradable to Win 11, which was the plan.
My question is, can I format the exising Win 11 (D:) partition, and add the vacant space to (F:) before upgrading Win 10 to Win11. I don't want two Windows 11 partitions.

Having lived with legacy Bios for a lifetime, I'm entering unfamiliar territory with UEFI and don't want to create a non bootable system by deleting the Windows 11 partition.
 
Windows Build/Version
Windows 22H2 19045.5854 and Windows 11 24H2

My Computer

System One

  • OS
    Windows 11 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Hybrid
    CPU
    Intel Core Ultra 7 265K
    Motherboard
    ASUS Prime H8 10m-A
    Memory
    32GB DDR5
    Graphics Card(s)
    NVIDIA GeForce GT 1030
    Sound Card
    Built in
    Monitor(s) Displays
    LG W2353 21inch
    Screen Resolution
    1920 x 1080
    Hard Drives
    Crucial P3 1TB, WD 4tb SSD, WD 1tb SSD, WD Red 10TB HDD
    PSU
    Antec CSK650DC 80+ Bronze
    Case
    Antec P10C Black ATX
    Cooling
    4 case fans
    Keyboard
    Microsoft wired
    Mouse
    Microsoft wired
    Internet Speed
    100Mbps/20Mbps
    Browser
    Chrome
    Antivirus
    Malwarebytes
    Other Info
    Windows 11 upgraded from Win10 upgraded from Win8.1
Deleting the D partition and expanding the F partition should not affect the boot record. So you can still boot in Windows 10 and simply remove the Windows 11 boot entry. However I think you can expand only to the right using Disk Manager. To expand to the left (move data to the empty space) you need a third-party program such as Minitool Partition Wizard.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 (build 22631.5472) test laptop, Windows 11 Pro v24H2 (build 26100.4351) main PC
    Computer type
    Laptop
    Manufacturer/Model
    Acer Extensa 5630EZ
    CPU
    Mobile DualCore Intel Core 2 Duo T7250, 2000 MHz
    Motherboard
    Acer Extensa 5630
    Memory
    4GB
    Graphics Card(s)
    Mobile Intel(R) GMA 4500M (Mobile 4 series)
    Sound Card
    Realtek ALC268 @ Intel 82801IB ICH9 - High Definition Audio Controller
    Monitor(s) Displays
    1
    Screen Resolution
    1280x800
    Hard Drives
    Samsung SSD 850 EVO 250GB SATA Device (250 GB, SATA-III)
    Internet Speed
    VDSL 50 Mbps
    Browser
    MICROSOFT EDGE
    Antivirus
    WINDOWS DEFENDER
    Other Info
    Legacy MBR installation, no TPM, no Secure Boot, no WDDM 2.0 graphics drivers, no SSE4.2, cannot get more unsupported ;) This is only my test laptop. I had installed Windows 11 here before upgrading my main PC. For my main PC I use everyday see my 2nd system specs.
  • Operating System
    Windows 11 Pro v24H2 (build 26100.4351)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom-built PC
    CPU
    Intel Core-i7 3770 3.40GHz s1155 (3rd generation)
    Motherboard
    Asus P8H61 s1155 ATX
    Memory
    2x Kingston Hyper-X Blu 8GB DDR3-1600
    Graphics card(s)
    Gainward NE5105T018G1-1070F (nVidia GeForce GTX 1050Ti 4GB GDDR5)
    Sound Card
    Realtek HD audio (ALC887)
    Monitor(s) Displays
    Sony Bravia KDL-19L4000 19" LCD TV via VGA
    Screen Resolution
    1440x900 32-bit 60Hz
    Hard Drives
    WD Blue SA510 2.5 1000GB SSD as system disk, Western Digital Caviar Purple 4TB SATA III (WD40PURZ) as second
    PSU
    Thermaltake Litepower RGB 550W Full Wired
    Case
    SUPERCASE MIDI-TOWER
    Cooling
    Deepcool Gamma Archer CPU cooler, 1x 8cm fan at the back
    Mouse
    Sunnyline OptiEye PS/2
    Keyboard
    Mitsumi 101-key PS/2
    Internet Speed
    100Mbps
    Browser
    Microsoft Edge, Mozilla Firefox
    Antivirus
    Microsoft Windows Defender
    Other Info
    Legacy BIOS (MBR) installation, no TPM, no Secure Boot, WDDM 3.0 graphics drivers, WEI score 7.4
Is the Recovery partition for Win 10 also the one for Win 11?
To find out, booting from win 10, open a cmd window as administrator and type:
reagentc /info
 

My Computers

System One System Two

  • OS
    Windows 11 Pro - Windows 7 HP 64 - 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 11 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
    500 Mb/s
    Browser
    Firefox 64
Megahertz said:
Is the Recovery partition for Win 10 also the one for Win 11?
To find out, booting from win 10, open a cmd window as administrator and type:
reagentc /info
Click to expand...

Reagentc.webp

I'm not sure what I'm looking for here, but it doesn't seem positive.
 

My Computer

System One

  • OS
    Windows 11 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Hybrid
    CPU
    Intel Core Ultra 7 265K
    Motherboard
    ASUS Prime H8 10m-A
    Memory
    32GB DDR5
    Graphics Card(s)
    NVIDIA GeForce GT 1030
    Sound Card
    Built in
    Monitor(s) Displays
    LG W2353 21inch
    Screen Resolution
    1920 x 1080
    Hard Drives
    Crucial P3 1TB, WD 4tb SSD, WD 1tb SSD, WD Red 10TB HDD
    PSU
    Antec CSK650DC 80+ Bronze
    Case
    Antec P10C Black ATX
    Cooling
    4 case fans
    Keyboard
    Microsoft wired
    Mouse
    Microsoft wired
    Internet Speed
    100Mbps/20Mbps
    Browser
    Chrome
    Antivirus
    Malwarebytes
    Other Info
    Windows 11 upgraded from Win10 upgraded from Win8.1
As I thought, there is no Recovery partition for Win 10
I suggest that, under Win 10, you delete the Win 11 partition (D:) and the recovery partition. Leave it unallocated and update Win 10 to Win 11 and a new recovery partition will be created. Once in Win 11 create a new data partition on the unallocated space or expand the F: partition to the left using a good drive manager like MiniTool
 

My Computers

System One System Two

  • OS
    Windows 11 Pro - Windows 7 HP 64 - 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 11 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
    500 Mb/s
    Browser
    Firefox 64
Megahertz said:
As I thought, there is no Recovery partition for Win 10
I suggest that, under Win 10, you delete the Win 11 partition (D:) and the recovery partition. Leave it unallocated and update Win 10 to Win 11 and a new recovery partition will be created. Once in Win 11 create a new data partition on the unallocated space or expand the F: partition to the left using a good drive manager like MiniTool
Click to expand...

What about letting Windows 10 update to 11 (windows update says it's ready to go) and if all works, and it boots to the "new" windows 11, then I delete (D:)
Would that work? I'm concerned that if the update to 11 fails for some reason, I might have an unbootable computer.
 

My Computer

System One

  • OS
    Windows 11 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Hybrid
    CPU
    Intel Core Ultra 7 265K
    Motherboard
    ASUS Prime H8 10m-A
    Memory
    32GB DDR5
    Graphics Card(s)
    NVIDIA GeForce GT 1030
    Sound Card
    Built in
    Monitor(s) Displays
    LG W2353 21inch
    Screen Resolution
    1920 x 1080
    Hard Drives
    Crucial P3 1TB, WD 4tb SSD, WD 1tb SSD, WD Red 10TB HDD
    PSU
    Antec CSK650DC 80+ Bronze
    Case
    Antec P10C Black ATX
    Cooling
    4 case fans
    Keyboard
    Microsoft wired
    Mouse
    Microsoft wired
    Internet Speed
    100Mbps/20Mbps
    Browser
    Chrome
    Antivirus
    Malwarebytes
    Other Info
    Windows 11 upgraded from Win10 upgraded from Win8.1
Okay, all sorted. Thanks to Megahertz for the info about reagentc I was able to create a windows 10 recovery partition using the reagentc /enable command and the update to 11 worked. I now have 11 as a 10 update, and a clean install 11 as dual boot. I will delete the clean install in due course.
Thanks to all who replied

​

 

My Computer

System One

  • OS
    Windows 11 24H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Hybrid
    CPU
    Intel Core Ultra 7 265K
    Motherboard
    ASUS Prime H8 10m-A
    Memory
    32GB DDR5
    Graphics Card(s)
    NVIDIA GeForce GT 1030
    Sound Card
    Built in
    Monitor(s) Displays
    LG W2353 21inch
    Screen Resolution
    1920 x 1080
    Hard Drives
    Crucial P3 1TB, WD 4tb SSD, WD 1tb SSD, WD Red 10TB HDD
    PSU
    Antec CSK650DC 80+ Bronze
    Case
    Antec P10C Black ATX
    Cooling
    4 case fans
    Keyboard
    Microsoft wired
    Mouse
    Microsoft wired
    Internet Speed
    100Mbps/20Mbps
    Browser
    Chrome
    Antivirus
    Malwarebytes
    Other Info
    Windows 11 upgraded from Win10 upgraded from Win8.1
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