USB Storage not mounted

05-15 23:10:12.654 D/Vold    (142): Volume usbdisk state changing -1 (Initializing) -> 0 (No-Media)
05-15 23:10:26.998 D/MountService(512): got storage path: /storage/usbdisk description: USB storage primary: false removable: true emulated: false mtpReserve: 0 allowMassStorage: false maxFileSize: 0
05-15 23:10:26.998 D/MountService(512):     mStorageId=0 mPath=/storage/usbdisk mDescriptionId=17040673 mPrimary=false
05-15 23:10:27.088 D/MountService(512): volume state changed for /storage/usbdisk (unmounted -> removed)
05-15 23:10:27.899 I/SystemServer(512): USB Service