Re: [gentoo-user] Re: problem formatting new 256 GB USB stick

[Wols Lists <antlists@youngman.org.uk>]

On 16/02/2025 13:41, Michael wrote:
>>> nor the "Attached SCSI removable disk" at the end :

> This is the message you get when the device is powered up, detected by the
> kernel and the filesystem is then being accessed.  From this point on the
> device can be read from and written to.

So (and this was my instant reaction on first reading the thread), is 
that you might be getting messages that you should expect but naively 
didn't.

You expect a message to say "detected USB drive". You expect a message 
to say "accessing file system(s)".

Except you then ran fdisk and deleted the MBR/GPT! So you're going to 
get a bunch of (possibly unexpected) messages about filesystems going 
away and reappearing ...

I'm not sure what else is going to happen, but there might be more 
"unexpected but obvious in hindsight" messages flying around.

The other thing. USB. Does all sorts of weird things. Just because your 
USB stick is USB3 doesn't mean you're going to get USB3 performance from 
it. Much as I don't like gaming mobos, you can reasonably assume 
manufacturers aren't gaming the system here - there's too many 
knowledgable people who will catch them out ...

But a possible scenario is the mobo has a single USB3 hub (probable, it 
can handle 128 devices) wired into the mobo, with a USB2 hub wired into 
the USB3 hub. I doubt it has a USB1 hub ... But some cheap USB hubs run 
at the speed of the slowest device - if your scanner is plugged in, 
live, and advertises itself as USB2, it could downgrade a cheap USB3 hub 
to USB2! Ouch! Or if it's just plugged into a USB2 port and holding the 
USB2 hub live!

Completely different, but I think I've just debugged a pain point at 
home. I've got a telco-supplied mesh network, which is crap. So I run 
ethernet-over-power, which WAS crap. Dunno why. Buy a tp-link router, 
configure it as an access point over CAT-5, plug the master 
ethernet-over-power into the access point not the telco hub, and bingo, 
everything is working so much better! Your trouble with these sticks is 
probably the same, make a couple of changes that as far as you can see 
should make no difference whatsoever, but they make a massive 
improvement instead ...

Cheers,
Wol