If you migrate a system from AIX Version 3.2 to AIX Version 4.3, you may have to rename some of the devices. The AIX Version 4 database must be built from scratch when the system is rebooted because the device configuration database in AIX Version 3 is not compatible with AIX Version 4 database. In this case, the devices are named as they are found, and there may be some cases where these names do not match the names in AIX Version 3.