More info on creation of drive: Delete all partitions on drive and use the base drive to encrypt. Do not encrypt a partitions such as /dev/sdd1 rather do /dev/sdd instead
Use VeraCrypt on Command Line to Encrypt Drives
Create a Hidden VeraCrypt Volume
To create a hidden VeraCrypt volume, step through the following procedure.
Create an outer volume
Launch veracrypt command from the terminal and pass option -c/–create and of course the -t/–text option. Most of the options will be requested if you don’t specify them on the command line and thus the setup becomes interactive.
# veracrypt -t -c
When you run the command, you are prompted to choose the type of volume. In this case, we are going to setup a Normal volume.
Volume type: 1) Normal 2) Hidden Select : 1
Next, define the Encryption as well as the hashing algorithms;
Encryption Algorithm: 1) AES 2) Serpent 3) Twofish 4) Camellia 5) Kuznyechik 6) AES(Twofish) 7) AES(Twofish(Serpent)) 8) Camellia(Kuznyechik) 9) Camellia(Serpent) 10) Kuznyechik(AES) 11) Kuznyechik(Serpent(Camellia)) 12) Kuznyechik(Twofish) 13) Serpent(AES) 14) Serpent(Twofish(AES)) 15) Twofish(Serpent) Select : 1 Hash algorithm: 1) SHA-512 2) Whirlpool 3) SHA-256 4) Streebog Select : 1
In the above, we chose the AES and SHA 512 as encryption and hashing algorithms respectively. You can also just press enter to accept the defaults.
Define the filesystem to format the volume with.
Filesystem: 1) None 2) FAT 3) Linux Ext2 4) Linux Ext3 5) Linux Ext4 6) NTFS 7) exFAT Select : 5
In this case, we are going with Linux Ext4.
Next, you need to set the password for encrypting outer volume. For PIM and keyfile path, press enter to set empty values.
Enter password: Enter STRONGPASSWORD Re-enter password: Re-Enter STRONGPASSWORD Enter PIM: Enter Enter keyfile path [none]: Enter
Next, type random numbers that can be use to improve the cryptographic strength of the encryption key. In this case, you are required to enter at least 320 random numbers.
Please type at least 320 randomly chosen characters and then press Enter: <PASTE YOUR 320 CHARACTERS HERE > Done: 100.000% Speed: 54 MB/s Left: 0 s The VeraCrypt volume has been successfully created.
To create the outer volume in non-interactive mode, run the command below;
# veracrypt -t -c --volume-type=normal /dev/sdb1 --encryption=aes --hash=sha-512 --filesystem=ext4 -p STRONGP@33WORD --pim=0 -k "" --random-source=/dev/urandom
Create a hidden volume within the outer volume
Once the outer volume is created, you need to create the hidden volume within it. So repeat the above procedure but this time round;
Define the volume type as hidden.
Volume type: 1) Normal 2) Hidden Select : 2
Define the size of the hidden volume.
Enter volume path: /dev/sdb1 Enter hidden volume size (sizeK/size[M]/sizeG): 500M
Set a different Password for hidden volume
... Enter password: STRONGPASSWORDFORHIDDENVOLUME Re-enter password: STRONGPASSWORDFORHIDDENVOLUME Enter PIM: Enter Enter keyfile path [none]: Enter...
If all is well, then your hidden volume should be successfully created.
... Please type at least 320 randomly chosen characters and then press Enter: <PASTE YOUR 320 CHARACTERS HERE > Done: 100.000% Speed: 256 MB/s Left: 0 s The hidden VeraCrypt volume has been successfully created and is ready for use. If all the instructions have been followed and if the precautions and requirements listed in the section "Security Requirements and Precautions Pertaining to Hidden Volumes" in the VeraCrypt User's Guide are followed, it should be impossible to prove that the hidden volume exists, even when the outer volume is mounted. WARNING: IF YOU DO NOT PROTECT THE HIDDEN VOLUME (FOR INFORMATION ON HOW TO DO SO, REFER TO THE SECTION "PROTECTION OF HIDDEN VOLUMES AGAINST DAMAGE" IN THE VERACRYPT USER'S GUIDE), DO NOT WRITE TO THE OUTER VOLUME. OTHERWISE, YOU MAY OVERWRITE AND DAMAGE THE HIDDEN VOLUME!
To create a hidden volume in non-interactive mode, run the command below;
# veracrypt -t -c --volume-type=hidden /dev/sdb2 --size=500M --encryption=aes --hash=sha-512 --filesystem=ext4 -p STRONGP@33WORDHID --pim=0 -k "" --random-source=/dev/urandom
Mount the Volumes
Once you are done creating the volumes, you can now mount them and write your files or data to them as you wish.
Mounting Outer Volume
To mount the outer volume, run the command below. When prompted for a password, use the password set for the outer volume above.
# veracrypt /dev/sdb1 /mnt/sdb1/ Enter password for /dev/sdb1: STRONGPASSWORD Enter PIM for /dev/sdb1: Enter Enter keyfile [none]: Enter Protect hidden volume (if any)? (y=Yes/n=No) [No]: Enter
To mount a volume prompting only for its password:
# veracrypt -t -k "" --pim=0 --protect-hidden=no /dev/sdb1 /mnt/sdb1/
List the mounted VeraCrypt volumes.
# veracrypt -l 1: /dev/sdb1 /dev/mapper/veracrypt1 /mnt/sdb1
To unmount the volume,
# veracrypt -d /dev/sdb1
Mounting the hidden volume
To mount the hidden volume, run veracrypt command as shown above but this time, use the password defined for the hidden volume.
Seen how easy it is to use VeraCrypt on command line to encrypt your storage volumes? You can now create or put your sensitive data into the hidden volume. Enjoy the power of encryption.