What Are the $INPLACE.~TR and $WINDOWS.~Q Folders and Can I Delete Them? - How-To Geek（情報元のブックマーク数）
手元のWindows Vista→Windows7でも"$INPLACE.~TR"と"C:\$WINDOWS.~Q"フォルダがあったので調べてみたら、アップグレードの一時ファイルとのこと。
ディスククリーンアップのシステムファイルの削除で無事削除できました。
So you’ve upgraded from Vista to Windows 7 and you’re wondering what those new hidden folders are doing in the root of your system drive, wasting 1+ GB of space. They are system protected, so should you really delete them?
What Are the $INPLACE.~TR and $WINDOWS.~Q Folders and Can I Delete Them?
通常の削除では、システムにロックされていて削除できないとのこと。
What Are the $INPLACE.~TR and $WINDOWS.~Q Folders and Can I Delete Them?Use Disk Cleanup
The easiest way to remove them is to just run Disk Cleanup (type it into the start menu search box), and then click the button to “Clean up system files”, which will re-launch Disk Cleanup as administrator.
Why is this the easiest way instead of the delete key? Because the folders are normally system protected, and you should also use Disk Cleanup regularly, so stop whining and get to it!
