MAC で Ubuntu 14.04 LTSのISOイメージをUSBにコピーした時のログ

host:Downloads user1$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.3 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage                         499.4 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           *499.1 GB   disk1
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *2.1 GB     disk2
   1:                 DOS_FAT_16 NO NAME                 2.1 GB     disk2s1
host:Downloads user1$ diskutil unmountdisk /dev/disk2
Unmount of all volumes on disk2 was successful
host:Downloads user1$
host:Downloads user1$
host:Downloads user1$
host:Downloads user1$
host:Downloads user1$
host:Downloads user1$ pwd
/Users/user1/Downloads
host:Downloads user1$ sudo dd if=/Users/user1/Downloads/ubuntu-14.04.1-server-amd64.iso of=/dev/disk2 bs=1m
Password:
572+0 records in
572+0 records out
599785472 bytes transferred in 177.818953 secs (3373012 bytes/sec)
host:Downloads user1$