Power down or Power cut?

[dosch]

hey, is it damaging to Moode to suddenly cut the power of the RPi it is running on? Or is that fine?

Asking because I can use the USB port on my AMP as a powersource for the Pi so it boots when I switch on the amp, and is turned off when the amp is off.

[Tim Curtis]

I've never had an issue after just pulling the plug or having power cut as a result of a power outage, but there is nothing explicitly implemented in moOde/RaspiOS for the abrupt power cut scenario for example by running the entire OS in RAM or running the OS as read-only.

There is a thread somewhere in the Forum with a recipe for running moOde under the overlayfs read-only file system which IIRC works but has not been reproduced and tested by others.

The main drawback to RAM / read-only mode's for OS's is that you have to go through hoops and revert to read-write mode every time a setting or option is changed, then revert back to read-only mode. IMO it's a convenience killer plus added complexity without a matching compensating benefit.

I've been using WD Purple QD101 surveillance-grade uSD cards and have not had a single issue or borked card in years.
https://www.amazon.com/gp/product/B088CD...UTF8&psc=1

[TheOldPresbyope]

If you remember first to use mooDe’s m>power>shutdown button you should be good even with sketchy uSD cards.

Like Tim, I’ve never borked a memory card by abruptly killing the power on a moOde player. I use mostly SanDisk Ultras. I have managed to break a card physically but that’s another story

Of course there is a remote possibility of catching Linux at just the wrong moment. One can keep a backup copy against that possibility.

Also, IIRC, very early model Pi’s did have an issue with killing memory cards but that was years ago.

Regards,
Kent

[dosch]

"If you remember first to use mooDe’s m>power>shutdown button you should be good even with sketchy uSD cards."

Yeah, so the use case is explicitly one where I would not be doing this.
I'll just see how far I get with this method... The card in use is an oldie anyway, and replacing it won't be a lot of pain.

Volumio claims that it "does not need this: the system runs on RAM, and SD Card is written only when saving settings". But I see that experiences vary....