Mastodawn

I had to rescue my grub bootloader setup, again. Running a multi-boot system can have its downsides, I guess. So here's a note to my future self how to fix it.

Scenario:

I am running a multi-boot setup with Arch (daily use), Debian (fallback) and FreeBSD (getting familiar) on different partitions and disks.

After upgrading packages in Debian, my grub setup was broken: Debian overwrote Arch's grub config and its os-prober did not generate a valid config for Arch, neither did I have a custom rule in place to get FreeBSD into the menu, since Arch is my primary system and I use grub exclusively from there. (Note to self: Remove grub from Debian!)

Fixing it:

I booted from an Arch installation USB I had lying around, then re-setup grub:

# mount EFI system partition
mount /dev/sda1 /boot

# mount Arch root partition
mount /dev/nvme0n1p2 /mnt

# mount EFI partition into Arch root partition at proper path
mount -o bind /boot /mnt/boot

# switch into Arch root filesystem
arch-chroot /mnt

# re-install grub into EFI system partition
grub-install --target=x86_64-efi --efi-directory=/boot/ --bootloader-id=grub

Afterwards, unmount and reboot - everything is back in place, hooray!

Docs:

#Linux #Grub #Troubleshooting #Bootloader

Arch Linux - Downloads

L'agenda du Libre Jun 6

Atelier d'été - Arch Linux

24 juillet 2026, 14:00:00 UTC+02:00 - GMT+02:00 - Local d'Infini (l'entrée s'effectue derrière la médiathèque des quatre-moulins), 186 rue Anatole France, Brest, Bretagne, France

https://keskonfai.fr/events/07ec9b40-9d51-4fad-9ecc-546f981ba918

Script Kiddie Jun 5

#meme #apocalypse #endtime #doomsday #science #hardware #software #drm #license #fail #problem #ethics #future #rescue #earth #civilization #society #economy #business #freedom #foss #floss #profit #capitalism #control #cloud #failure #bug #bootloader #boot

DopaScout ⁂Jun 4

Wenn andere beim Start ihres Smartphones eine Warnung wegen des offenen Bootloaders sehen, denken sie vor allem an die Risiken. Und das völlig zu Recht.

Ich sehe darin aber auch einen kleinen digitalen Mittelfinger Richtung Big Tech. 🤭

#bootloader #lineageos #customrom #unplugtrump #unpluggafam

Gytis Repečka May 22

Got official confirmation in Samsung Community that Galaxy S devices have permanently locked bootloader since One UI 8 with no options to unlock it in the future

This is sad

#samsungcommunity #withgalaxy #samaungmembers #android #bootloader

Gytis Repečka (@[email protected])

Year 2025 has been terrible for Android world: Google announces Developer Verification which will effectively restrict sideloading, now I read Samsung has silently disabled bootloader unlock with upgrade to Android 16, other manufacturers to follow in EU, supposedly for "security reasons" :blobcatnotlikethis: And not to mention the only "innovation" in mobile is useless AI :blobcatgooglytrash: Also Android Open Source Project (AOSP) is now developed behind closed doors of Google, with sources being published after the fact, leaving community outside of the process until Google is done working on it :blobcatfearful: :android: #android #developer #sideloading #bootloader

social.gyt.is

PhreakByte the Octopus May 19

Once again, i did the #impossible 😉

Flashed #bootloader (UF2) to #ChameleonUltra

Everything is here ** WARNING! ** You will likely brick your device, but this branch contains also the tools to create a UF2 rescue app!

https://github.com/nieldk/ChameleonUltra/tree/UF2

Hacker News May 14

Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet

https://www.synacktiv.com/en/publications/exploiting-the-tesla-wall-connector-from-its-charge-port-connector-part-2-bypassing

#HackerNews #Tesla #Wall #Connector #Bootloader #Firmware #Bypass #Exploit #Cybersecurity

Exploiting the Tesla Wall Connector from its charge port connector -

Synacktiv

L⁂⁂⁂CY iDK ⚝ ⁂ ⚝ ⚝ ⁂ ⁂May 7

@mntmn i have to buy a #laptop. i have to make money with my work :( want do this with #floss design. My question is, has the #mntreform or next enough power? I use programs like #gimp, webdesign, #blender, videoediting #kdenlive (no cinema, but social media & peertube). My #thinkPad yoga 260 makes errors by video cutting in #shotcut bc is to weak i think

It should upgreadable, repairable & have free #bootloader. Last point why no #framework

Or is an old upgraded thinkpad for my case enough?

Gemini0

May 5

i take it nobody knows any methods to unlock the #bootloader of a north american #samsung galaxy a71 5g (sm-a716u) without paying some random guy on the internet $65 over paypal and talking with him on a telegram chatroom, right?
why the hell does the same phone literally let you do it from the settings app in europe and japan? what the fuck?
i just want this samsung bullshit gone, man

May 2

If nothing goes wrong, tomorrow I'll be able to apply for #bootloader unlocking. Sigh. #xiaomi #hyperos