If you have the following line in auto.mnt: floppy -fstype=ext2 :/dev/fd0 you will get these errors: shmoo.support.redhat.com FTP server (Version wu-2.4.2-VR17(1) Mon Apr 19 09:21:53 EDT 1999) ready. end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 end_request: I/O error, dev 02:00 (floppy), sector 0 Remove the line from auto.mnt and it's fine.
Fixed in the wu-ftpd-2.5.0-5.6.0 errata.