I use Windows 10 and both my internal system SSD and my portable hdd are encrypted with bitlocker. I doubt there is a bitlosker that is crossplatform, but is there some other whole-disk encryption options I can use? I would like it to work across Windows and Linux and Android, but any options are worth considering. Windows 10 has gotten a but too big for theor own britches!
The standard installer that you see when you boot the ISO has the option to-do full disk encryption.
Is that what you are after?
Possibly. Can I use the same encryption options after installation, both the internal SSD and external USB devices? I am installing on a tablet PC with only one USB port, which is taken by the boot USB to do the installation with, so until the installation is done, I cant use a keyboard, and based on previous times I have installed Budgie in this tablet, without the keyboard, I couldn’t use the installation option that included disk encryption.
"You can encrypt your data after installation even though you didn’t choose to encrypt it during installation.
To encrypt your entire /home directory and, all it’s sub-directories, such as Documents, Downloads, Music, etc. read this link: how-to-encrypt-your-home-folder-after-installing-ubuntu that explains how to encrypt /home after you’ve installed Ubuntu. There are plenty of screenshots and narrative walking you through the process.
To summarize the link what you need to do is:
- Backup your data. Although the migration process uses a working backup you want your own just to be safe.
- Install the encryption software with
sudo apt-get install ecryptfs-utils cryptsetup.
- Create a temporary account with sudo privileges. In order to encrypt your /home directory you can’t be logged on as yourself.
- Login with temporary account.
- Migrate your data from unencrypted /home directory to an encrypted /home directory using the command
sudo ecryptfs-migrate-home -u userwhere “user” is your regular user name.
- Please note besides encrypting /home your swap partition can also be encrypted for maximum protection.
- DO NOT REBOOT
- Login with your regular user name. A random passphrase can be generated which you need to write down if something goes wrong in
the future and you need to access /home folder manually.
Some people feel encrypting all of /home is overkill and can be too cumbersome when moving /home to another computer or different drive on the same computer. I tried encryption when I installed Ubuntu for the first time in 2014 but when I messed things up and had to reinstall Ubuntu I skipped the encryption option after reading problems other users encountered (although I never did have encryption problems).
If you don’t want to encrypt /home and all the sub-directories. You can have a single encrypted ~/.Private directory where you can keep certain files that need encryption such as “things I don’t want the NSA to know” or “wife’s surprise birthday party planning”. This is described here: EncryptedPrivateDirectory"
I copied this reply from: https://askubuntu.com/questions/820642/how-to-add-encryption-after-installation
I hope this helps you
Great info. Thank you. In Windows 10 with Bitlocker used on my external USB HDD, I have to enter my passcode for that HDD before I can access it. Is there a similar feature to secure an external HDD in Ubuntu? If so, I will probably head back to Budgie. I really thought M$ has learned their lesson with buggy patches and fixes to fix fixes they broke with previous fixes, but apparently, there os no teaching that old dog new tricks.
This will get you where you need to