I've a question: When I open /etc/fstab file, I see the following content:
proc /proc proc nodev,noexec,nosuid 0 0 /dev/sdb1 / ext4 errors=remount-ro 0 1 UUID=adf08252-b173-4679-a162-5786aa43eaf9 none swap sw 0 0
Ok. If I understood well, these are mounted at the very start of the OS. However, when I got to /dev, I don't have any sdb1, but just sda, sda1, sda2 and sda5.
When I do sudo fdisk -l I find this:
Device Boot Start End Blocks Id System /dev/sda1 * 1 14212 114149376 83 Linux /dev/sda2 14212 14594 3068929 5 Extended /dev/sda5 14212 14594 3068928 82 Linux swap / Solaris
And if I run mount, I get this (and more stuff, but I believe this is what is important for this question):
/dev/sda1 on / type ext4 (rw,errors=remount-ro,commit=0) proc on /proc type proc (rw,noexec,nosuid,nodev)
So, my question is: How it's possible that in /etc/fstab I have sdb1, and this does not appear neither in mount and fdisk?
PS: If there are recommended readings to understand all related to this, I would appreciate.