"Rebuild Database" is a PS3 maintenance action from Safe Mode that scans the system, removes invalid entries, and reorganizes the XMB database (file metadata and icons). A verified "Rebuild Database" PKG replicates that behavior as an installable package, allowing users to run the cleanup from the normal menu (or other custom workflows) without entering Safe Mode. This write-up explains what such a PKG does, why someone would use it, risks and limitations, verification considerations, and a recommended implementation/usage checklist.
You recently deleted a large number of files and want to reclaim "ghost" space on your HDD. Safety Warning ps3 kdw rebuild database pkg verified