Cannot mount an existing EBS on AWS

Solution 1:

Looks like you have partitioned that block device. In this case, you need to mount /dev/xvdf1, not just /dev/xvdf.

Solution 2:

For me there was some mysterious file causing this issue.

First check your partitions to make sure you are running an ext3 volume and then:

For me I had to clear the directory using the following command.

sudo mkfs -t ext3 /dev/sdf

Warning: this might delete files you have saved. So you can run ls to make sure you don't lose important saved files