Actualy, i have two SD cards, 2gb and 4gb also, i have 4 Sticks, 512mg, 1gb, 4gb and 8gb all tests done using (SD 2 and 4gb)(Sticks 2 and 8gb) I used them all now in this windows so the results will be FULL when i run "history" and "devcon" now i'll attach the requested information NEW Windows history --> usb_history_NEW_.txt devcon results --> devcon_NEW_.txt migrate.inf for SD2 --> MIGRATE_NEW__SD2_.INF ParentIdPrefix SD2 --> "7&24e8d74f&0" migrate.inf for SD4 --> MIGRATE_NEW__SD4_.INF ParentIdPrefix SD4 --> "7&24e8d74f&0" migrate.inf for STICK2 --> MIGRATE_NEW__STICK2GB_.INF ParentIdPrefix STICK2 --> "7&2ba01341&0" migrate.inf for STICK8 --> MIGRATE_NEW__STICK8GB_.INF ParentIdPrefix STICK8 --> "7&d825748&0&" OLD Windows will reboot using old windows, then attach the following history --> usb_history_old.txt devcon results --> devcon_OLD_.txt migrate.inf for SD2 --> MIGRATE_OLD__SD2_.INF ParentIdPrefix SD2 --> "7&d7f206a&0&" migrate.inf for SD4 --> MIGRATE_OLD__SD4_.INF ParentIdPrefix SD4 --> "7&d7f206a&0&" migrate.inf for STICK2 --> MIGRATE_OLD__STICK2GB_.INF ParentIdPrefix STICK2 --> "7&2ba01341&0" migrate.inf for STICK8 --> MIGRATE_OLD__STICK8GB_.INF ParentIdPrefix STICK8 --> "7&d825748&0&" wondering why the "ParentIdPrefix" for SD2GB is always same as SD4GB while the "ParentIdPrefix" for STICK2GB is not the same as STICK8GB although the STICKS are from the same vendor(KINGSTON) as the SDs?