There is an old article at

http://wiki.linuxservertech.com/index.php?action=artikel&cat=9&id=173

which may help you. I wrote it when I was booting servers from USB
Thumbdrives. Again, it is an older article so use some caution when you
review it. But, I have servers using thumbdrives that have been running
for 5+ years.

Rod

On 12/02/2018 04:41 AM, Edward Bartolo wrote:
> Hi everyone.
>
> Recently I have been using a Raspberry Pi 3B, obviously powered with
> Devuan, to run as music player. Restarting it yesterday, I was
> dismayed to discover it would not boot properly anymore, with long
> lists of errors complaining about not being able to write to the SD
> CARD. The latter is not full. Examining it I found it is now
> permanently marked as read-only. Searching online for an explanatory
> cause, I learnt this occurs when the maximum number of write cycles is
> reached. So, the SD CARD, although brand new is now to be thrown away.
>
> The purpose of this email is to ask how to radically minimized write
> cycles to the SD CARD when I run Devuan for Raspberry Pi 3. I found a
> how-to which uses /tmp fs for frequently modified system files, but
> the user uses systemd and I do not want to have that.
>
> Can any good soul help, please?
> Thanks.
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--
Rod Rodolico
Daily Data, Inc.
POB 140465
Dallas TX 75214-0465 US
http://dailydata.net
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