Modified uid can no longer see flash drives

[MR ZenWiz]

On Mon, May 30, 2016 at 9:55 PM, Nils Kassube <kassube at gmx.net> wrote:
> MR ZenWiz wrote:
>>
>> However, this userid did not match the uid on my laptop (1000), and it
>> got picky a week or so ago  with cross-machine copies.  I decided to
>> change the uid to match (1000 -> 500).  I thought I'd covered all the
>> bases, but alas, things have not been so nice.
>
> I suppose using uid <1000 is the problem. Usually uids below 1000 are
> considered system uids. From /etc/adduser.conf:
>

I suppose that is possible, but if so, why isn't it a problem on my
desktops that use that id as well?