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After installing OpenBSD fully encrypted with keys on USB stick, let's try with Linux and Fedora 32 (that we will push to rawhide for bleeding edge experience). As reading a non-clear text key seems largely impossible on Linux… I opted for “Honeypot OS” solution: Windows 10 on 256GB drive and Linux / on second drive with /boot on USB drive. This way without the USB key, Only Windows boots :D


Lenovo Thinkpad X230 Table with an m-SATA drive in the phone card slot and 500GB hard drive replaced by a 1TB SSD, 16GB RAM, Corei5 CPU.

Disk partitioning

SSD (1TB) = sda
m-SATA (256GB) = sdb
sdd = 16GB Usb Drive

disk partition type size mount point install pass
sdb sdb* Microsoft Crap 256GB
sdb sdb2 EFI Partition 100MB /boot/efi
sdd sdd1 ext2 10GB /boot
sda /dev/mapper/Fedora LUKS encrypted 1TB test
sda sda1 swap 16GB -
sdb /dev/mapper/Fedora-fedora–root ext4 915GB /


Using Fedora Media Writer I created a live USB with Fedora 32
Boot is set to “UEFI” with Microsoft “Secure boot” (LOL yes Secure and Microsoft in the same sentence) pure GPT crap on all devices
I first installed Windows 10 on first hard drive (m-sata 256GB)
Install goes by and when at the step of partitionning disk I choose Custom, select all devices then mount the EFI partition of the m-sata drive as /boot/efi then create /boot(ext2) on the USB key an LVM(named Fedora, encrypted) and inside create swap and / (ext4)

I put an easy passphrase as we'll change it later and put the key on a USB drive to decrypt easily. initial pass are in the table above :-)

After reboot it will ask for swap then LVM key

Next step put the encrypted key on the USB key to avoid typing


Switch to rawhide ! Rock'n roll :-)

dnf upgrade
dnf install -y dnf-plugins-core fedora-repos-rawhide
dnf config-manager --set-disabled fedora updates updates-testing
dnf config-manager --set-enabled rawhide
dnf clean -q dbcache packages metadata
dnf --releasever=rawhide --setopt=deltarpm=false distro-sync --nogpg
touch /.autorelabel
====== Missing programs/repo ======
<code bash> dnf install -y htop ccze vim zsh dfc git



dnf install -y fprint libfprint fprint-pam

LUKS key on usb drive


key in /boot/trololo.key (usb drive formatted in ext2)


add this key to the luks partition

 cryptsetup luksAddKey /dev/disk/by-uuid/<lvm luks> /boot/trololo.key


create a dracut config file to help mounting the key at early stage

 vi /etc/dracut.conf.d/usb-decrypt.conf



Note: my USB drive is formatted in ext2

Re-generate initramfs

 dracut -fv


get UUID of devices to get the UUID of your USB drive

 ls -l /dev/disk/by-uuid

Add in grub.cfg

 vi /boot/efi/EFI/fedora/grub.cfg


rd.luks.key=/trololo.key:UUID=<UUID of USBdrive>

Note: the key path is relative to the device

Reboot to test



 dd if=/dev/urandom of=/boot/trololo.key bs=1 count=1024

Failover key

cryptsetup luksAddKey /dev/sda1

cleaning keys

Check keys:

  • list
cryptsetup luksDump /dev/sda1
  • check one specific
cryptsetup luksOpen --test-passphrase --key-slot 0 /dev/sda2 && echo correct
  • delete osolete
cryptsetup -v luksKillSlot /dev/sda1 0
cryptsetup -v luksKillSlot /dev/sda1 1
os/fedora/eole.txt · Last modified: 2021/12/29 21:03 by warnaud