I have 3 identical make/model external hard drives connected by USB, and /etc/fstab looks like this:
[...]UUID=1b83f30d-cb05-460f-ba98-50912a639330 /mnt/disk1 ext4 auto,defaults,nofail 0 2UUID=b2653db0-5233-4812-a5af-bf3a8944db80 /mnt/disk2 ext4 auto,defaults,nofail 0 2UUID=c02d2990-61b6-432d-9b20-b95643607065 /mnt/disk3 ext4 auto,defaults,nofail 0 2[...]After reboot, df -h looks like this:
[...]/dev/sdb1 3.6T 3.1T 313G 92% /mnt/disk1/dev/sdd1 3.6T 3.0T 484G 87% /mnt/disk3[...]As you can see, disk 2 fails to mount after every single boot or reboot. Trying to mount it manually with sudo mount /mnt/disk2 results in mount: /mnt/disk2: /dev/sdc1 already mounted or mount point busy. BUT! If I then wait, 2-3 minutes after boot time, I can mount it just fine with the exact same command. So, the drive will mount eventually. What I'm trying to find out is
- Why is the disk unable to mount for the first several minutes after boot and
- How can I reliably ensure the disk mounts automatically? I don't even care if the machine takes 2-3 longer to boot, as long as the disk is mounted eventually.