this post was submitted on 04 Aug 2024
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I use Arch btw

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I don't think I'll continue using Arch, btw (lemmy.ohaa.xyz)
submitted 1 month ago by [email protected] to c/linuxmemes
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[–] [email protected] 20 points 1 month ago (5 children)

Wait if the power is out, how do they have Internet to load new packages? Something doesn't make sense here

[–] kolorafa 17 points 1 month ago* (last edited 1 month ago) (2 children)

It first downloads all packages from net, then it proceed totally offline starting by verifying downloaded files, signatures, extracting new packages and finally rebuilding initramfs.

Because arch is replacing the kernel and inittamfs in-place there is a chance that it will not boot if interrupted.

This issue was long resolved on other distro.

One way to mitigate it is by having multiple kernels (like LTS or hardened) that you can always pick in grub if the main one fail.

[–] [email protected] 7 points 1 month ago (1 children)

This issue was solved on Slackware in 1993.
It installs a "huge" kernel that contains all drivers to run on almost any hardware by default, alongside the "generic" kernel with only the modules you need. If the generic kernel fails to boot, you always have the backup, which is known to work, cause it's the kernel you first boot into after installation.

[–] [email protected] 6 points 1 month ago (1 children)

I'm not familiar with slackware but why is specific kernel called generic, while generic one is not called generic? I'm puzzled

[–] [email protected] 3 points 1 month ago* (last edited 1 month ago)

I have no idea either.

Edit: Did some reading. "Linux-generic" is just the name of the linux kernel that is used in most computers (as opposed to Linux-realtime, which is the only other Linux kernel that's still relevant).

[–] EuroNutellaMan 1 points 1 month ago (1 children)

Yeah but how can you download without internet

[–] kolorafa 1 points 1 month ago* (last edited 1 month ago)

(No internet =} no download = no failure

You can even host repo mirror locally, that will still work without internet ;)

How to have internet without power?

  • Mobile hotspot
  • Router and AP using UPS
[–] [email protected] 11 points 1 month ago (1 children)

Cable internet tends to stay online even if your power is out. You'd need a battery backup for your modem/router, but it is possible to stay online. Houses can be clever like that, almost all of your utilities will partially work, even when service is interrupted.

[–] [email protected] 7 points 1 month ago

That depends on the ISP having backup batteries for their equipment. It will usually only last a couple of hours. 5G will usually stay up for a few days. For longer outages, you will need satellite internet and lots of fuel for your generator.

[–] [email protected] 3 points 1 month ago

Cellular data

[–] devfuuu 2 points 1 month ago (1 children)

My router has a 5G backup connection and a battery. Light could be out and I'd still have internet. So, yeah, it's possible :P

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago) (1 children)

But if the power goes out isn't the stuff from your ISP/mobile carrier out too?

[–] [email protected] 3 points 1 month ago

Nah, cell towers often have some kind of backup power good for a couple hours or more, at least in the city where I am. I think I once had an outage last 3 days when a tornado wrecked the local transformer station, and still had cell service the entire time.