# Drive C basic information
$drive = Get-PSDrive C
$totalGB = [math]::Round(($drive.Used + $drive.Free) / 1GB, 2)
$usedGB = [math]::Round($drive.Used / 1GB, 2)
$freeGB = [math]::Round($drive.Free / 1GB, 2)

# Hibernation file (hiberfil.sys)
$hiber = if (Test-Path "C:\hiberfil.sys") { (Get-Item "C:\hiberfil.sys").Length } else { 0 }

# Page file (pagefile.sys)
$page = if (Test-Path "C:\pagefile.sys") { (Get-Item "C:\pagefile.sys").Length } else { 0 }

# System restore points
$restorePoints = Get-ComputerRestorePoint -ErrorAction SilentlyContinue
$rpCount = @($restorePoints).Count

$path = "C:\hiberfil.sys"
if (Test-Path $path) {
    $size = (Get-Item $path).Length
    Write-Host "🔴 Hibernation file: $([math]::Round($size/1GB, 2)) GB"
}

# Disable hibernation (free up space, run as administrator in PowerShell)
powercfg.exe /hibernate off

# Re-enable if needed
powercfg.exe /hibernate on

$path = "C:\pagefile.sys"
if (Test-Path $path) {
    $size = (Get-Item $path).Length
    Write-Host "🔴 Page file: $([math]::Round($size/1GB, 2)) GB"
}

1. Win+R → sysdm.cpl → Advanced → Performance Settings → Advanced → Virtual Memory
2. Select Drive C → No paging file → Set
3. Select Drive D → Custom size (Recommended: Physical memory ×1.5) → Set
4. Restart computer to take effect

# Requires administrator privileges, use with caution
wmic pagefileset where name="C:\\pagefile.sys" delete
wmic pagefileset create name="D:\\pagefile.sys"

$rp = Get-ComputerRestorePoint -ErrorAction SilentlyContinue
$rpsize = vssadmin list shadowstorage 2>$null
Write-Host "🔴 Number of restore points: $($rp.Count)"

# View all restore points
vssadmin list shadows

# Delete all restore points (frees up a lot of space!)
vssadmin delete shadows /all /quiet

# Or delete all except the latest
# Limit maximum occupied space via "Configuration":
vssadmin resize shadowstorage /on=C: /for=C: /maxsize=5GB

# Actual WinSxS usage (Dism tool)
Dism /Online /Cleanup-Image /AnalyzeComponentStore

# Administrator PowerShell
# 1. Analyze first
Dism /Online /Cleanup-Image /AnalyzeComponentStore

# 2. Clean up (if prompted that space can be reclaimed)
Dism /Online /Cleanup-Image /StartComponentCleanup
Dism /Online /Cleanup-Image /StartComponentCleanup /ResetBase

$winTemp = "C:\Windows\Temp"
$s = (Get-ChildItem $winTemp -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
$c = (Get-ChildItem $winTemp -Recurse -Force -EA SilentlyContinue).Count

$userTemp = "$env:LOCALAPPDATA\Temp"
$s = (Get-ChildItem $userTemp -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
$c = (Get-ChildItem $userTemp -Recurse -Force -EA SilentlyContinue).Count

$thumbPath = "$env:LOCALAPPDATA\Microsoft\Windows\Explorer"
$dbFiles = Get-ChildItem $thumbPath -Filter "*.db" -ErrorAction SilentlyContinue
$s = ($dbFiles | Measure-Object Length -Sum).Sum

$rbPath = "C:\$Recycle.Bin"
$s = (Get-ChildItem $rbPath -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
$c = (Get-ChildItem $rbPath -Recurse -Force -EA SilentlyContinue).Count

$updateCache = "C:\Windows\SoftwareDistribution\Download"
$s = (Get-ChildItem $updateCache -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum

$npmCache = "$env:LOCALAPPDATA\npm-cache"
$s = (Get-ChildItem $npmCache -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum

# Method 1: Set environment variable (permanent effect)
[System.Environment]::SetEnvironmentVariable("npm_config_cache", "D:\dev-cache\npm", "User")

# Method 2: npm config
npm config set cache "D:\dev-cache\npm"

# Verify
npm config get cache

$ngCache = "$env:LOCALAPPDATA\node-gyp\Cache"
$s = (Get-ChildItem $ngCache -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum

# Create target directory
New-Item -ItemType Directory -Path "D:\dev-cache\node-gyp" -Force

# Delete original cache then create symbolic link (need to delete original directory first)
Remove-Item "$env:LOCALAPPDATA\node-gyp\Cache" -Recurse -Force
cmd /c mklink /D "$env:LOCALAPPDATA\node-gyp\Cache" "D:\dev-cache\node-gyp"

$pipCache = "$env:LOCALAPPDATA\pip\cache"
if (Test-Path $pipCache) {
    $s = (Get-ChildItem $pipCache -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
}

# Set environment variable
[System.Environment]::SetEnvironmentVariable("PIP_CACHE_DIR", "D:\dev-cache\pip", "User")

# Or via pip configuration file: %APPDATA%\pip\pip.ini
# [global]
# cache-dir = D:/dev-cache/pip

$yarnCache = "$env:LOCALAPPDATA\Yarn\Cache"
if (Test-Path $yarnCache) {
    $s = (Get-ChildItem $yarnCache -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
}

yarn config set cacheFolder "D:\dev-cache\yarn"

$pnpmStore = "$env:LOCALAPPDATA\pnpm\store"
$pnpmContent = "$env:LOCALAPPDATA\pnpm\content-v2"

# Set pnpm home
pnpm set store-dir "D:\dev-cache\pnpm-store"
pnpm set global-bin-dir "D:\dev-cache\pnpm-global"
# Or via environment variable
[System.Environment]::SetEnvironmentVariable("PNPM_HOME", "D:\dev-cache\pnpm", "User")

$nugetPkg = "$env:USERPROFILE\.nuget\packages"

<!-- %APPDATA%\NuGet\NuGet.Config -->
<configuration>
  <config>
    <add key="globalPackagesFolder" value="D:\dev-cache\nuget-packages" />
  </config>
</configuration>

$cargoRegistry = "$env:USERPROFILE\.cargo\registry"
$cargoGit = "$env:USERPROFILE\.cargo\git"

# Move the entire .cargo directory to Drive D
Move-Item "$env:USERPROFILE\.cargo" "D:\dev-cache\.cargo"

# Create symbolic link
cmd /c mklink /D "$env:USERPROFILE\.cargo" "D:\dev-cache\.cargo"

# Or set environment variable CARGO_HOME=D:\dev-cache\.cargo

$mavenRepo = "$env:USERPROFILE\.m2\repository"

<!-- ~/.m2/settings.xml -->
<settings>
  <localRepository>D:/dev-cache/maven-repo</localRepository>
</settings>

$gradleCaches = "$env:USERPROFILE\.gradle\caches"

# Set environment variable
[System.Environment]::SetEnvironmentVariable("GRADLE_USER_HOME", "D:\dev-cache\gradle", "User")

$chromeCache = "$env:LOCALAPPDATA\Google\Chrome\User Data\Default\Cache"
$edgeCache = "$env:LOCALAPPDATA\Microsoft\Edge\User Data\Default\Cache"

# Add parameter to Chrome shortcut target
# "...chrome.exe" --disk-cache-dir="D:\browser-cache\chrome"

$logFiles = @{
    "setupact.log" = "C:\Windows\setupact.log"
    "iis.log"       = "C:\Windows\iis.log"
    "comsetup.log"  = "C:\Windows\comsetup.log"
    "DumpStack.log" = "C:\DumpStack.log"
}

JetBrains Toolbox → Settings → Change installation path for:
  - Plugins directory
  - Shared scripts, configs, etc.
→ Change to D:\dev-tools\jetbrains-shared

# Scan the top 20 largest files on Drive C (exclude Windows directory to avoid scanning system files by mistake)
Get-ChildItem -Path C:\ -Recurse -Force -File -ErrorAction SilentlyContinue |
    Where-Object { $_.FullName -notlike 'C:\Windows\*' -and $_.FullName -notlike 'C:\`$Recycle.Bin\*' } |
    Sort-Object Length -Descending |
    Select-Object -First 20 |
    Select-Object @{N='Size(MB)';E={[math]::Round($_.Length/1MB,2)}},
                      @{N='Size(GB)';E={[math]::Round($_.Length/1GB,2)}},
                      FullName

$dockerData = "$env:LOCALAPPDATA\Docker\wsl"
$dockerProfiles = "$env:APPDATA\Docker\profiles"

wsl --list --verbose
# View .vhdx file location
Get-ChildItem "$env:LOCALAPPDATA\Packages" -Filter "*.vhdx" -Recurse -ErrorAction SilentlyContinue

# 1. Export distribution
wsl --export <Distribution Name> D:\wsl-backups\ubuntu.tar

# 2. Unregister original distribution
wsl --unregister <Distribution Name>

# 3. Import from backup to Drive D
wsl --import <Distribution Name> D:\WSL\ubuntu D:\wsl-backups\ubuntu.tar

# 4. Delete backup file (optional)
Remove-Item D:\wsl-backups\ubuntu.tar

# Scan size of first-level subdirectories under user directory
Get-ChildItem "$env:USERPROFILE" -Directory -Force -ErrorAction SilentlyContinue |
    ForEach-Object {
        $size = (Get-ChildItem $_.FullName -Recurse -Force -EA SilentlyContinue | Measure-Object Length -Sum).Sum
        [PSCustomObject]@{ Folder=$_.Name; SizeMB=[math]::Round($size/1MB,2); SizeGB=[math]::Round($size/1GB,2) }
    } | Sort-Object SizeMB -Descending | Select-Object -First 15

This PC → Right-click "Documents" (or "Downloads"/"Desktop"/"Videos", etc.) → Properties → Location tab → Enter new path (e.g., D:\Documents) → Move

$suspicious = @(
    "C:\Za3fb24eb1dd5a3.zip",
    "C:\aa3fb24eb1dd5a3.zip",
    "C:\sfs4.9",
    "C:\sml8.31",
    "C:\DumpStack.log"
)
foreach ($f in $suspicious) {
    if (Test-Path $f) {
        $info = Get-Item $f
        [PSCustomObject]@{
            File=$info.Name
            SizeKB=[math]::Round($info.Length/1KB,2)
            CreationTime=$info.CreationTime.ToString('yyyy-MM-dd HH:mm:ss')
            FullPath=$info.FullName
        }
    }
}

╔══════════════════════════════════════════════════════╗
║     Drive C Deep Analysis Report v2.0                ║
║     Read-only Mode · No Files Modified               ║
╚══════════════════════════════════════════════════════╝

━━━ I. Drive C Space Overview ━━━
Total Capacity: XXX GB | Used: XXX GB (XX%) | Available: XXX GB

Hidden Space Usage:
├─ Hibernation file(hiberfil.sys): XX GB ─ Suggestion: [✅Recommended to disable/⚠️Keep]
├─ Page file(pagefile.sys): XX GB ─ Suggestion: [✅Migratable to Drive D]
├─ System Restore Points: X ─ Suggestion: [⚠️Can clean up old ones]
└─ WinSxS Component Store: XX GB (Actual cleanable: X GB) ─ Suggestion: [✅Recommended to clean with Dism]

━━━ II. Summary of Cleanable Items ━━━

【✅ Highly Recommended to Delete】
├─ ☐ Windows Temporary Files          XX MB   ── Cleanup Command: ...
├─ ☐ User Temporary Files              XX MB   ── Cleanup Command: ...
├─ ☐ Thumbnail Cache               XX MB   ── Cleanup Command: ...
└─ ☐ System Log Files             XX KB   ── Cleanup Command: ...

【⚠️ Can Delete After Confirmation】
├─ ☐ Recycle Bin                    XX MB   ── (70 files)
├─ ☐ Windows Update Cache           XX MB   ── (Ensure no updates are in progress)
└─ ...

【💻 Development Tool Caches】(Can be deleted OR migrated!)
├─ ☐ npm Cache                  XX MB   ── Delete: npm cache clean --force
│                                          Migrate: npm config set cache "D:\..."
├─ ☐ node-gyp Cache              XX MB   ── Delete: Remove-Item ...
│                                          Migrate: Symbolic link to D:\...
├─ ☐ pip Cache                   XX MB   ── Delete: pip cache purge
│                                          Migrate: PIP_CACHE_DIR=D:\...
├─ ☐ Yarn Cache                  XX MB   ── Migrate: yarn config set cacheFolder
├─ ☐ pnpm Cache                  XX MB   ── Migrate: pnpm set store-dir
├─ ☐ NuGet Cache                 XX MB   ── Migrate: NuGet.Config
├─ ☐ Cargo(Rust) Cache           XX MB   ── Migrate: CARGO_HOME
├─ ☐ Maven Repository                 XX MB   ── Migrate: settings.xml
└─ ☐ Gradle Cache                XX MB   ── Migrate: GRADLE_USER_HOME

━━━ III. 🔍 Top 20 Large Files on Drive C ━━━
#1  XX GB  C:\xxx\xxx         ── [Suggestion: xxx]
#2  XX GB  C:\xxx\xxx         ── [Suggestion: xxx]
...

━━━ IV. ⚠️ Items Requiring Manual Check ━━━
├─ 🔴 Suspicious Files in Drive C Root Directory (4)
│   Za3fb24eb1dd5a3.zip  ── Please right-click to check properties and source
│   aa3fb24eb1dd5a3.zip  ── Please right-click to check properties and source
│   sfs4.9               ── Please right-click to check properties and source
│   sml8.31              ── Please right-click to check properties and source
│
├─ 🔴 Docker/WSL Data      XX GB  ── Can be migrated to Drive D
└─ ...

━━━ V. 📦 One-Click Migration Guide (Move Data from Drive C to Drive D) ━━━
[See "Migration Method" in each category]