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#1 2021-08-20 18:03:33

strct
Member
Registered: 2020-04-04
Posts: 3

[SOLVED] Computer doesn't boot up after update o.O

Hi, my system doesn't boot anymore after I updated today morning (around 7:00 UTC) and tried to reboot afterwards. I didn't read the pacman output sad, sorry.

When booting only the boot selection shows up (same as pressing Esc), not even the boot loader.

And most worryingly I can't use cryptsetup to access my disk from a arch life stick. I don't understand how this could happen. Do you have any ideas how I can proceed?

$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
loop0         7:0    0 641.6M  1 loop /run/archiso/airootfs
sda           8:0    1   1.9G  0 disk 
├─sda1        8:1    1   711M  0 part /run/archiso/bootmnt
└─sda2        8:2    1    68M  0 part 
nvme0n1     259:0    0 476.9G  0 disk 
├─nvme0n1p1 259:1    0   296M  0 part 
└─nvme0n1p2 259:2    0   1.2G  0 part 

It seems like the /root partition is missing from lsblk?

System setup:

* Installed via the Guided Installer (installed mid to end May this year)
* Systemdboot
* Encrypted root partition

Last edited by strct (2021-08-21 22:22:35)

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#2 2021-08-20 22:13:38

seth
Member
Registered: 2012-09-03
Posts: 23,963

Re: [SOLVED] Computer doesn't boot up after update o.O

What does fdisk/parted tell you about the partition layout?
What is the 1.2GB patition supposed to be? There at all? Swap?
Did you by any chance also recently play around w/ the partition table ("I need more swap space")?

Be super-careful when writing anything to the disk, ideally dump the disk into an image on a different drive and play around on that only.

Lastly: https://wiki.archlinux.org/title/SMART

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#3 2021-08-21 20:04:31

strct
Member
Registered: 2020-04-04
Posts: 3

Re: [SOLVED] Computer doesn't boot up after update o.O

I noticed today that it is totally my fault. Thanks for helping, I started to backup the disk, but aborted when I found out that I won't be able to recover anything.

My mistake was a dd with my ssd as target instead of the micro sd card I meant to overwrite (for a raspberry pi) neutral.

Most of my data is accessible (except for some parts from the last week, which is ok). but will look into real backups now big_smile

Last edited by strct (2021-08-21 20:05:49)

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#4 2021-08-21 20:52:06

seth
Member
Registered: 2012-09-03
Posts: 23,963

Re: [SOLVED] Computer doesn't boot up after update o.O

Good to hear, I'll admit that even after maaaaaany years, dd on device nodes still scares the shit out of me and I double and triple check that the nodes really are what I think they are. On the upside, I've never nuked devices this way ;-)

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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