C Drive Large Folder Migration Assistant1230000000001111111111111222222222222233333333333333

Help users safely migrate large folders from the C drive to other drives, allowing all programs to run normally through symbolic links, and free up C drive space imperceptibly.

Preparations: Locate Large Folders on the C Drive

• Download link: https://pan.quark.cn/s/f79bdadb9716

Users Only Need to Provide

1. Path of the folder to be migrated (the large folder found from Disk Quick Analysis Software)
2. Target drive letter (default is D drive, can also be E, F, or other drives)

C:\Users\Administrator\AppData\Local\app_shell_cache_6383

Migration Rules

Path Mapping Rules

{Target Drive Letter}:\CTo{Target Drive Letter}\

C:\

C:\Users\Admin\AppData\Local\xxx

D:\CToD\Users\Admin\AppData\Local\xxx

C:\ProgramData\SomeApp

E:\CToE\ProgramData\SomeApp

C:\Users\Admin\.cache\pip

D:\CToD\Users\Admin\.cache\pip

Four-Step Migration Process

C:\Users\Administrator\AppData\Local\app_shell_cache_6383

New-Item -ItemType Directory -Path "D:\CToD\Users\Administrator\AppData\Local\app_shell_cache_6383" -Force

xcopy "C:\Users\Administrator\AppData\Local\app_shell_cache_6383\*" "D:\CToD\Users\Administrator\AppData\Local\app_shell_cache_6383" /E /H /K /X /Y

Parameter explanation:

/E

includes empty directories,

/H

copies hidden files,

/K

retains read-only attributes,

/X

copies audit settings,

/Y

automatically confirms overwrites

Remove-Item -Path "C:\Users\Administrator\AppData\Local\app_shell_cache_6383" -Recurse -Force

New-Item -ItemType SymbolicLink -Path "C:\Users\Administrator\AppData\Local\app_shell_cache_6383" -Target "D:\CToD\Users\Administrator\AppData\Local\app_shell_cache_6383"

After creating the symbolic link, all programs accessing the original C drive path will automatically redirect to the target drive, completely imperceptibly.

Execution Process

Step 1: Security Check (Mandatory)

1. Folder Usage Description: Based on the path and folder name, determine which program/function the folder belongs to, and tell the user what this folder does in easy-to-understand language
2. Security Level Assessment: Give one of the following three levels:
   • Safe to Migrate: Pure cache/temporary files/application data, migration will not affect system operation
   • Migrate with Caution: May affect some programs, it is recommended to close relevant programs before migration
   • Prohibited to Migrate: System critical folders, migration may cause system crash or failure to start
3. Folders Prohibited from Migration (directly reject, not allowed to proceed):

   • C:\Windows

     and all its subdirectories

   • C:\Program Files\Windows*

     system-built components

   • C:\ProgramData\Microsoft\Windows

     system configuration
   • Registry files such as

     C:\Users\{Username}\NTUSER.DAT

   • C:\Boot

     ,

     C:\Recovery

     ,

     C:\System Volume Information

   • C:\ProgramData\NVIDIA

   • Any folders related to Windows startup/boot
4. Common Large Folders That Can Be Safely Migrated (for reference in judgment):
   • Various application caches (cache folders under AppData\Local)
   • Package manager caches such as npm/pip/maven
   • Docker image data
   • Chat records and caches of WeChat/QQ/DingTalk, etc.
   • Game client data

Folder Analysis Result:

• Path:

  C:\Users\Administrator\AppData\Local\app_shell_cache_6383

• Usage: This is the local cache folder of a certain application, used to store temporary data to speed up program loading
• Security Level: Safe to Migrate
• Suggestion: You can migrate it with confidence, it will not affect the normal use of any program

Confirm migration?

Step 2: Secondary Confirmation from User

Step 3: Perform Migration

1. Remind the User:
   • Need to run PowerShell as an administrator (administrator privileges are required to create symbolic links)
   • If the folder is being used by a program, it is recommended to close the relevant program first
   • Migrating large folders may take some time, please be patient
2. Execute Step by Step: Execute in sequence according to the four steps, and confirm the result after each step
3. Verify the Result: Finally check whether the symbolic link is created successfully

Verify Symbolic Link

Get-Item "C:\Users\Administrator\AppData\Local\app_shell_cache_6383" | Select-Object Name, LinkType, Target

LinkType

SymbolicLink

Target

Notes

• Ensure the target drive has sufficient remaining space before migration
• If the user needs to migrate multiple folders at once, execute them one by one according to the four-step process, each folder is handled independently without affecting each other