Re: Installing GuixSD on an external USB hard drive

[Chris Marusich <cmmarusich@gmail.com>]

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Hi Divan!

Thank you for taking the time to write to us about the problem.  These
kinds of but reports are very helpful!

On Tue, Apr 17, 2018, 06:43 Divan Santana <divan@santanas.co.za> wrote:

> OK, I think this is a bug.


It could be.  Please report it to bug-guix@gnu.org.  If you have an
operating system configuration file that reproduces the problem
consistently, please share it in your report.  In particular, if you can
reproduce the problem using "guix system vm", it will make things much
easier for us to debug.  The manual describes how to use that command:

https://www.gnu.org/software/guix/manual/html_node/Invoking-guix-system.html

The way I worked around it was to:


> 1) remount /gnu/store rw
>
> 2)
>
> cd
>
> /gnu/store/n9ym4yl7s55pm57rnc5whjlzjgvxas32-linux-libre-4.16.2/lib/modules/4.16.2-gnu/kernel/drivers/usb/storage/
> cp usb_storage.ko usb-storage.ko
>

That's good to know, but you should not modify files in the store or mount
it rw.  It can lead to unpredictable behavior because doing so may violate
certain invariants.  When hacking around on a throw-away system to
investigate an issue like this, don't this might be useful, but on systems
you care about, essentially the only way you should interact with the store
is via the public Guix scheme APIs and the Guix command line tools, since
they will ensure that the store's invariants are never violated.

Again, thank you for the report!  I hope everything is smooth sailing from
this point on.

-- 
Chris

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