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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to unlock LUKS partition at boot? (lemmy.world)

submitted 1 month ago* (last edited 1 month ago) by nettie@lemmy.world to c/linux@lemmy.ml

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I have a file system on LVM inside LUKS on a 2nd SSD that I'd like to mount at boot time. The OS boots fine on the main (non-LUKS) SSD.

/etc/crypttab contains a line mapping a UUID to a name, with no keyfile.

/etc/fstab contains a line mapping /dev/LVMvg/volume to /home/special

But I'm not asked for the passphrase at boot.

I can do it manually once booted (cryptdisks_start asks for the passphrase, decrypts it, and then LVM picks up the volumes enabling me to mount /home/special.) But I'd like all this to happen early in the boot.

How can I make the early processes ask me for the crypt password?

Thanks!

EDIT: Solved!

Thanks (blush) to man crypttab ... Add initramfs to the options field in crypttab does the trick. I was a bit confused though because man crypttab tells me that Systemd's crypttab is different and doesn't support the initramfs option... but I'm using systemd and it worked. Anyway, it did work. Phew.

Thanks for answers though!

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[–] eldavi@lemmy.ml 1 points 1 month ago (1 children)

I'm going to be doing this in the next few days and I'm SO GLAD you posted the how it was solved.

For a second there I was afraid you were going to leave us hanging like they used to do on forums where they updated saying it was fixed but not how... Or worse yet w a dead link. Lol

[–] nettie@lemmy.world 1 points 1 month ago

Good luck!