> On 5 Nov 2020, at 11:48, Sylvain Hubert <champignoom@gmail.com> wrote:
>
> After dozens of compilations of various minimal examples using the newly installed context, the problem reappeared.
>
> Removing tex/texmf-cache does not help.
>
> Does anyone know what files context modifies apart from tex/texmf-cache?

None.

Are you sure your disk(-driver) is OK?

tbh I'm not sure. I tried to figure that out by experimenting with different kinds of stress tests and none of them triggered the same problem, but I don't have much experience on this kind of problem anyway.