# U3 Launchpad ## Identification A portable Windows application environment shipped on some USB drives using a virtual CD-ROM partition. ## Notebook evidence - [[Scanned_20260730-1946|Scanned_20260730-1946]], PDF pages 20-21. ## Relationships and evidentiary boundary [[SanDisk]] · [[Digital preservation]] · [[Windows Preinstallation Environment]]. The notebook occurrence preserves a historical compatibility or software clue. It does not alone prove installation, use, ownership, provenance, or the exact identification of uncertain handwriting.