I have a Kingston A400 128Gb SSD as the boot drive. It's almost brand new. And for a while, I had had a problem of runaway drive usage by an unidentified source and the drive would be permanently out of space .... until today.... after I selected all folders and checked the total disk space consumed using Properties dialogue in the Context Menu, and after the tabulation completed, ~55Gb space became available.
What are the possible causes behind SSDs displaying less available space than there actually is? What could the tabulation have triggered in releasing the space? And can I trust the space to be truly available -- is there a way to verify?
To be clear, memory paging is turned off for that drive; out of this list, I can confirm none of hidden files, system folders, recycle bin, system backup, file compression are relevant in my situation. I have no way to check the space indexing used to take or fragmentation used to cause. The folders combined does not display significantly more or less space on drive as of now.
selected all foldersin Explorer for calculating the used space does not work on Windows 7 because of soft-links, and other NTFS special features. Use the disk property dialog for a real free/used calculation.Propertiesin the context menu of a disk item in the Windows Explorer.