How to mount encrypted partition by UUID?
by qajaq from LinuxQuestions.org on (#5KK6T)
I have an external hard drive (xHDD) that will be used for backing-up files from my laptop. I've found a tutorial that explains how to set up a LUKS encrypted partition on the xHDD.
The tutorial also shows how to mount the encrypted partition in a two-step process when I want to use it.
Code:# cryptsetup --type luks open /dev/sdb1 encrypted
# mount -t ext4 /dev/mapper/encrypted /place/to/mountI have two questions related to this given code:
1. Because I will be using the laptop and xHDD both at home and on the road, I will sometimes have the xHDD plugged in when the laptop boots and sometimes later, when I've finished working and am ready to back-up files. That will make a difference whether the xHDD is shown in /dev as sda1 or sdb1. Question: Can this command line be modified to use the xHDD's UUID?
2. Is the term "/dev/mapper" intended to be literal, or is it a place-holder name for some variable device-name in /dev?
Thanks for any help, either direct or linking.
The tutorial also shows how to mount the encrypted partition in a two-step process when I want to use it.
Code:# cryptsetup --type luks open /dev/sdb1 encrypted
# mount -t ext4 /dev/mapper/encrypted /place/to/mountI have two questions related to this given code:
1. Because I will be using the laptop and xHDD both at home and on the road, I will sometimes have the xHDD plugged in when the laptop boots and sometimes later, when I've finished working and am ready to back-up files. That will make a difference whether the xHDD is shown in /dev as sda1 or sdb1. Question: Can this command line be modified to use the xHDD's UUID?
2. Is the term "/dev/mapper" intended to be literal, or is it a place-holder name for some variable device-name in /dev?
Thanks for any help, either direct or linking.