Manjaro with Full Disk Encryption and GRUB

[dumetrulo]

Hi folks! I have a working install of Manjaro Sway on eMMC (and Tow-Boot on SPI), and want to 'reform' it into a setup with full FDE (as much as possible). To do this, I did the following so far:

• Created a USB drive with one ESP and one LUKS partition
  
• Created LVM swap and root partitions inside LUKS volume
  
• Copied working system from eMMC to USB drive
  
• Used manjaro-chroot to install GRUB
  

This USB drive can now boot from GRUB, and prompts for the LUKS password. After entering it, it takes about 3 minutes to unlock the key, then drops me at the GRUB prompt. It appears that there are no menu entries at all.

Any ideas on how to continue? And on a related note, any ideas on how to speed up the cores in GRUB so that it unlocks the key faster?

[frankkinney]

Hi folks! I have a working install of Manjaro Sway on eMMC (and Tow-Boot on SPI), and want to 'reform' it into a setup with full FDE (as much as possible). To do this, I did the following so far:

• Created a USB drive with one ESP and one LUKS partition
  
• Created LVM swap and root partitions inside LUKS volume
  
• Copied working system from eMMC to USB drive
  
• Used manjaro-chroot to install GRUB
  

This USB drive can now boot from GRUB, and prompts for the LUKS password. After entering it, it takes about 3 minutes to unlock the key, then drops me at the GRUB prompt. It appears that there are no menu entries at all.

Any ideas on how to continue? And on a related note, any ideas on how to speed up the cores in GRUB so that it unlocks the key faster?

I think  if you have a TPM (Trusted Platform Module) chip on your system, you might be able to configure it to store the encryption key, which can speed up the unlocking process.