About the size of streamlined image, and size of the system after installation

That's normal. Windows decompresses and unpacks a lot of files during installation of the operating system. See this thread (link) for more information, specifically the "File Explorer" section. An unmodified Windows 10 install will be somewhere around 26.0 gigabytes, so your 12 gigabyte install is actually more than 50% smaller already. The more components you remove with NTLite, the more you will reduce both the image folder sizes, as well as the final install size. On the flip side, one of the ways these sizes increase is when people integrate drivers.
 
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4 GB is the source image size. No program (including NTLite) can correctly guess the size of the final install. It depends on several factors.

The reported disk usage for C: includes:
- Windows program files
- Disk assigned for the page file, which is determined to your RAM memory size.
- Disk assigned for Reserved Storage. Disable it from NTLite Settings -> System / Reserved Storage

If you would like to turn it off on a live system:
Code: 
dism /Online /Set-ReservedStorageState /State:Disabled
 
Hellbovine said:
That's normal. Windows decompresses and unpacks a lot of files during installation of the operating system. See this thread (link) for more information, specifically the "File Explorer" section. An unmodified Windows 10 install will be somewhere around 26.0 gigabytes, so your 12 gigabyte install is actually more than 50% smaller already. The more components you remove with NTLite, the more you will reduce both the image folder sizes, as well as the final install size. On the flip side, one of the ways these sizes increase is when people integrate drivers.
Click to expand...
Thank you for your answer
 
garlin said:
4 GB is the source image size. No program (including NTLite) can correctly guess the size of the final install. It depends on several factors.

The reported disk usage for C: includes:
- Windows program files
- Disk assigned for the page file, which is determined to your RAM memory size.
- Disk assigned for Reserved Storage. Disable it from NTLite Settings -> System / Reserved Storage

If you would like to turn it off on a live system:
Code: 
dism /Online /Set-ReservedStorageState /State:Disabled
Click to expand...
I overlooked this one you mentioned, I'll give it a try!
 
garlin said:
If you would like to turn it off on a live system:
Code: 
dism /Online /Set-ReservedStorageState /State:Disabled
Click to expand...
if that is set prior to sysprep would it be saved in the captured image?
 
ahh ok. reason being is i prefer not to play with a clean iso before capture because if anything goes wrong with the resulting capture and something is wrong i can quickly pinpoint what went wrong, it removes 1 variable during the process. will figure this one out :)
 
Load the captured image, and apply the Setting. All you're doing is flipping some reg keys.
Enable or Disable Reserved Storage in Windows 11

Enable Reserved Storage:
Code: 
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager]
"MiscPolicyInfo"=dword:00000001
"PassedPolicy"=dword:00000001
"ShippedWithReserves"=dword:00000001

Disable Reserved Storage:
Code: 
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager]
"MiscPolicyInfo"=dword:00000002
"PassedPolicy"=dword:00000000
"ShippedWithReserves"=dword:00000000
 
Mr. Yu said:
Can I set a fixed reserved storage size, such as 3GB.
Click to expand...
No. The entire reason for Reserved Storage is to steal reserve enough disk space for WU to download a full install image, and perform an in-place upgrade when the next Windows is released.

There is no reason is to enable it if you don't want this possibility. It's done to guarantee Windows can be upgraded in the future, for non-technical users who can't keep track of their disk usage and don't know how to clean up files.
 
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