NWCONFIG-X-274: Some disk partitions already exist. NWCONFIG will delete them (including the files, user data, etc.) and create new ones if you confirm Yes in the box that follows this message. Active (bootable) partitions, such as the DOS boot partition, will not be deleted, even if you confirm Yes. WARNING: To preserve the data in non-active partitions, confirm No.
Source: NWCONFIG.NLM
Explanation: Unless you specify otherwise, NWCONFIG will delete all nonbootable DOS partitions and use the largest area of free space to create a NetWare disk partition.
Action: If you want the partitions deleted, confirm with Yes; otherwise respond No.