**To attach a volume to an instance**
This example command attaches a volume (``vol-1234567890abcdef0``) to an instance (``i-01474ef662b89480``) as ``/dev/sdf``.
Command::
aws ec2 attach-volume --volume-id vol-1234567890abcdef0 --instance-id i-01474ef662b89480 --device /dev/sdf
Output::
{
"AttachTime": "YYYY-MM-DDTHH:MM:SS.000Z",
"InstanceId": "i-01474ef662b89480",
"VolumeId": "vol-1234567890abcdef0",
"State": "attaching",
"Device": "/dev/sdf"
}