用fdformat /dev/fd0H1440
时：
Formatting ... done
Verifying ... end_request: I/O error, dev 02:1c (floppy), sector 0
end_request: I/O error, dev 02:1c (floppy), sector 2
end_request: I/O error, dev 02:1c (floppy), sector 4
end_request: I/O error, dev 02:1c (floppy), sector 6
Read: : Input/output error
Problem reading cylinder 0, expected 18432, read -1
end_request: I/O error, dev 02:1c (floppy), sector 8
end_request: I/O error, dev 02:1c (floppy), sector 10
end_request: I/O error, dev 02:1c (floppy), sector 12
end_request: I/O error, dev 02:1c (floppy), sector 14
end_request: I/O error, dev 02:1c (floppy), sector 16
end_request: I/O error, dev 02:1c (floppy), sector 18
end_request: I/O error, dev 02:1c (floppy), sector 20
end_request: I/O error, dev 02:1c (floppy), sector 22
end_request: I/O error, dev 02:1c (floppy), sector 24
end_request: I/O error, dev 02:1c (floppy), sector 26
end_request: I/O error, dev 02:1c (floppy), sector 28
end_request: I/O error, dev 02:1c (floppy), sector 30
end_request: I/O error, dev 02:1c (floppy), sector 32
end_request: I/O error, dev 02:1c (floppy), sector 34

那一大堆error是怎么回事？
用mde2fs时也出同样的错了　　　　　　

到底是什么错误啊？