Aftermath of in place upgrade


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PeterL

Well-known member
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OS
Windows 11 64bit
I am left with a Windows.old folder which contains gigabytes of data I am unable to delete. 21H2
 

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Windows 11 64bit3.70 gigahertz Intel core i7-8700K16GBNvidia GTX 1050
OS
Windows 11 64bit
Computer type
PC/Desktop
Manufacturer/Model
Bespoke
CPU
3.70 gigahertz Intel core i7-8700K
Motherboard
MSI 7B22
Memory
16GB
Graphics Card(s)
Nvidia GTX 1050
Sound Card
on board
Monitor(s) Displays
Dell 27" Ultrasharp
Screen Resolution
2560 x1440
Hard Drives
Drive c: 1tb SSD
DriveD: 1TB SSD
DriveE: 2tb HDD
External drive Samsung T7 2TBSSD
Cooling
no
Internet Speed
52MB/sec
Browser
Chrome
Antivirus
MalwareBytes & Microsoft Defender
Did you do the upgrade through windows update?
If so.
You want to leave the windows old folder in case you want to roll back. Windows will delete it in 10 days.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows11intel 8250 I58gbintel uhd 620
    OS
    Windows11
    Computer type
    Laptop
    Manufacturer/Model
    Huawei Matebook X Pro
    CPU
    intel 8250 I5
    Memory
    8gb
    Graphics Card(s)
    intel uhd 620
    Monitor(s) Displays
    built in laptop display
    Screen Resolution
    1920x1280
    Hard Drives
    Samsung 970 Evo 500gb M2
    Browser
    Edge
    Antivirus
    Defender

  • At a glance

    Windows 10AMD Ryzen 7300U16 GB DDR4AMD Raedon RX Vega graphics onboard
    Operating System
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    Acer A515-43-R6DE
    CPU
    AMD Ryzen 7300U
    Memory
    16 GB DDR4
    Graphics card(s)
    AMD Raedon RX Vega graphics onboard
    Monitor(s) Displays
    15"6 FHD IPS Slim Bezel
    Hard Drives
    512cb PCie NVME SSD
    Case
    Pure Silver
    Keyboard
    Inbuilt
    Mouse
    Touchpad and Logitech external mouse
    Browser
    Edge
    Antivirus
    Defender
PeterL said:
I am left with a Windows.old folder which contains gigabytes of data I am unable to delete. 21H2
Click to expand...
As humbird said, by default 10 days after the upgrade windows.old will be automatically deleted and you will no longer be able to go back to your previous version of Windows.

www.elevenforum.com

Go Back to Previous Version of Windows in Windows 11

This tutorial will show you how to go back to the previous Windows from Windows 11 without losing your documents, photos, and other personal files. Windows 11 gives you the ability to uninstall and go back (roll back) to a previous version of Windows. When you upgrade to Windows 11 from...
www.elevenforum.com www.elevenforum.com

If you want longer to decide, you can increase the number of days.

www.elevenforum.com

See and Set Number of Days Go Back to Previous Version of Windows in Windows 11

This tutorial will show you how to see and set the number of days after an upgrade you are still able to go back to a previous version of Windows in Windows 11. Windows 11 gives you the ability to uninstall and go back (roll back) to a previous version of Windows. When you upgrade to Windows...
www.elevenforum.com www.elevenforum.com

But if you are happy that Windows is working fine, and that you'll never need to roll back to your previous version, then you can delete it now.

www.tenforums.com

How to Delete Windows.old and $Windows.~BT folders in Windows 10

Another good one Shawn I just noticed there's a Windows defender listing on the list 3.77mg :/ But yea Previous windows installation files 8.34gb That
www.tenforums.com www.tenforums.com
 

My Computers My Computers

System One System Two Other systems

  • At a glance

    Windows 11 HomeAMD Athlon Silver 3050U8GBRadeon Graphics
    OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23-R9VY
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD (from April 2026: 250GB EVO 850)
    Internet Speed
    150 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    UPDATE - 11 April 2026: due to lid hinges starting to break up this laptop has been retired from active duty. The OS with all software and files has been migrated to my System Seven in 'Other systems' to carry on as my general purpose 'main machine'.

    I've now clean installed 25H2 and used Garlin's scripts to update Secure Boot to CA 2023 and revoke the PCA 2011 certificates. It's new role is to test secure boot issues.

    Info for 2021-2026:
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, 24H2 on 3rd October 2024 through Windows Update by setting the Target Release Version for 24H2, and 25H2 on 30th September 2025 through Windows Update by setting the Target Release Version for 25H2.

  • At a glance

    Windows 11 ProIntel® Core™ i5-520M8GB(integrated graphics) Intel HD Graphics
    Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.

    In-place upgrade to 22H2 using ISO and a workaround.
    Feature Update to 23H2 by manually installing the Enablement Package.
    In-place upgrade to 24H2 using hybrid 23H2/24H2 install media.
    Upgraded to 25H2 by Enablement Package.

    Also running Insider Experimental 263xx and 29xxx builds and Windows 10 as native boot .vhdx.
  • My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro.

    My SYSTEM FOUR was a 2-in-1 convertible Lenovo Yoga 11e (1st gen) type 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device. This has now been sold. It has been replaced by my System Eight.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 1TB NVMe ssd, supported device running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds (and a few others) as a native boot .vhdx.

    My SYSTEM SIX is a Dell Latitude 5550, Core Ultra 7 165H, 64GB RAM, 1TB NVMe SSD, supported device, Windows 11 Pro, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, 1920x1080 touchscreen, Intel Core i7-8650U, 16GB RAM, 512GB NVMe SSD + 2nd 512GB NVMe SSD, a supported device for Windows 11. This is my current general purpose 'main machine'. The installed Windows 11 Home from my System One has been migrated to this machine. As its new home has an existing digital licence for Pro I've been able to upgrade the migrated OS from Home to Pro.

    My SYSTEM EIGHT is a 2-in-1 convertible Lenovo Yoga 11e (5th gen) type 20LN, Celeron N4120, 8GB RAM, 512GB NVMe ssd, a supported device for Windows 11. Currently running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds as native boot vhdx.
Think our minds are connected xD
Im using TreeFree, Take ownership and delete to you're hearts content.
OR if you want an easier way, Go to settings>storage>temp files and it will be in there too
 
Last edited by a moderator:

My Computer My Computer

At a glance

11[email protected]Viper Steelseries 32gb@ 3600mhzGigabyte 2070 Super 8GB, +200 core + 600 memory
OS
11
Computer type
PC/Desktop
Manufacturer/Model
Custom
CPU
[email protected]
Motherboard
Gigabyte Gaming X Z490
Memory
Viper Steelseries 32gb@ 3600mhz
Graphics Card(s)
Gigabyte 2070 Super 8GB, +200 core + 600 memory
Monitor(s) Displays
ASUS 4k HDR, Two 1080p Benq and Samsung
Screen Resolution
3840x2160/2560x1440/1920x1080
Hard Drives
Adata XPG SX8200 PRO 1tb
Samsung EVO 870 500GB
PSU
Corsair RX 650
Case
NZXT h510
Cooling
CM HYPER 212 RGB
Keyboard
Razer Ornata Chroma
Mouse
Steelseries Rival 710
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