USBフラッシュメモリーのデータ復元検証【RecoveryFox AI編】

> Set-Location F:\Akademeia_RecoveryTest   # ←USBフラッシュメモリーの実ドライブレターが「F」だったとき
> @( (Get-ChildItem -File) ) | ForEach-Object {
  $h = Get-FileHash -Algorithm SHA256 -LiteralPath $_.FullName
  [PSCustomObject]@{
    Name          = $_.Name
    Length        = $_.Length
    CreationTime  = $_.CreationTime.ToString('o')
    LastWriteTime = $_.LastWriteTime.ToString('o')
    SHA256        = $h.Hash
  }
} | Export-Csv -NoTypeInformation -Encoding Default "..\baseline_$(Get-Date -f yyyyMMddHHmmss).csv"

> Set-Location "C:\Users\owner\OneDrive\Desktop\復元出力先\FH6M2_A02 (F)\クイックスキャン\Akademeia_RecoveryTest"   # 復元先フォルダーのパスを指定
> @( (Get-ChildItem -File) ) | ForEach-Object {
  $h = Get-FileHash -Algorithm SHA256 -LiteralPath $_.FullName
  [PSCustomObject]@{
    Name          = $_.Name
    Length        = $_.Length
    CreationTime  = $_.CreationTime.ToString('o')
    LastWriteTime = $_.LastWriteTime.ToString('o')
    SHA256        = $h.Hash
  }
} | Export-Csv -NoTypeInformation -Encoding Default "..\baseline_$(Get-Date -f yyyyMMddHHmmss).csv"

> $base = Import-Csv "F:\baseline_20250818001823.csv"
> $recv = Import-Csv "C:\Users\owner\OneDrive\Desktop\復元出力先\FH6M2_A02 (F)\クイックスキャン\baseline_20250818005731.csv"

# 内容一致（Name + SHA256）
> Compare-Object $base $recv -Property Name,SHA256 -IncludeEqual -PassThru | Format-Table Name, SideIndicator, SHA256

Name               SideIndicator SHA256
----               ------------- ------
photo_���{��.jpg   ==            45D4E7FA370F772557EB25BDAED3298AD66D38F7A04D6CB9150A6813930AF309
video_sample.mp4   ==            EA3AF4327C291B2321DBC7A24BFF716DED036FC9E574613C723BFB885F9F0369
mixed content.docx =>            B1BCFFBE5DDC1DFD0B11897C454376702DFD1DCD95936BDC5646644D15C24A47
test_english.txt   =>            C429B2B32F74C8D97D5D7B2EFC3D4E514B3762DA61276054C35269BFEAC6DB1B
mixed content.docx <=            14A252345FC22FABF632FDD14639A5972FD5E46945C602CA3D9E2A4261ADF6F7
test_english.txt   <=            8648D1ACB8723D5F41C94417F2A26108CDB4985D02330E6995FF915B9CB480FE
test_���{��.txt    <=            077C771EF66ECDF1FC361014C45F67AAF61664F38B3115805AA7517F7B735DC7
# ファイル名の文字化けはここでは無視。「<=」や「=>」は不一致を意味します。

# 【参考】タイムスタンプ差異の把握
> $map = $recv | Group-Object Name -AsHashTable -AsString
> $base | ForEach-Object {
  if ($map.ContainsKey($_.Name)) {
    [PSCustomObject]@{
      Name           = $_.Name
      Base_LastWrite = $_.LastWriteTime
      Recv_LastWrite = $map[$_.Name].LastWriteTime
      Same_Hash      = ($_.SHA256 -eq $map[$_.Name].SHA256)
    }
  }
} | Format-Table

Name               Base_LastWrite                    Recv_LastWrite                    Same_Hash
----               --------------                    --------------                    ---------
mixed content.docx 2025-08-17T22:48:18.0000000+09:00 2025-08-18T00:50:42.2798121+09:00     False
photo_���{��.jpg   2020-12-11T14:25:52.0000000+09:00 2025-08-18T00:50:42.3908076+09:00      True
test_english.txt   2025-08-17T23:54:14.0000000+09:00 2025-08-18T00:50:42.4248083+09:00     False
video_sample.mp4   2025-05-25T13:03:32.0000000+09:00 2025-08-18T00:50:51.8342598+09:00      True