FAT get corrupted after unmounting from PC

[alojzjakob]

Checklist

• I am reporting a bug in the Onion OS - Any issues with the closed source frontend (MainUI), or RetroArch or any of the cores should be directed to their respective repositories
• I have reviewed the Onion Docs and did not find the answer
• I have searched the existing (open and closed) issues to ensure I do not log a duplicate

Onions OS Version

4.3.1-1

Miyoo Firmware Version

202310271401

Provide a clear and concise description of the issue

After copying onion files on a freshly formatted fat32 card and fresh onion install, i turn off my device, eject the card and copy my roms etc.
I put back my card into the device, everything works fine.
After few days i decide to add some more roms to the card, so i do it, eject from my computer.
Once i put it back into the device, it does not boot. I tried putting the card back into my PC, filesystem is not there!

My guess is that by using miyoo/onion the card filesystem gets corrupted after playing with it, save files writes etc. but it still works, as long as it stays in miyoo.
Once i put it back into my PC and add new files it really gets messed up and FAT breaks completely.

Steps to Reproduce

Same as in description above

Provide any additional context or information that may help us investigate your issue

I tried multiple brands of cards, and multiple sizes from 8GB to 64 GB, always same issue happens

[Antaniserse]

You said different cards, but are you using the same SD card adapter to connect to your PC?

This hardly sounds like an Onion issue, and more a sketchy adapter doing the damage, especially given the "as long as I use just Onion, everything works fine" comment

As a side note, if you device has WiFi, Onion offers multiple options to add new ROMS and files without ever needing to take the SD card out

[alojzjakob]

That would be a dodgy adapter if this didnt happen all the time, it never gets corrupted after steps:

1. format on PC
2. transfer onion files
3. eject from PC
4. install on miyoo mini
5. power off
6. mount to PC
7. transfer roms
8. eject from PC
9. put card back to miyoo mini

It gets corrupted if i decide to add a few more roms:

1. power off miyoo mini
2. mount and transfer roms on PC
3. eject the card from my PC
4. Card corrupted!

Every time same scenario repeats (with any card i tried) so i repeat first 9 steps...
My bad I was not this specific in OP

[rockweather]

I've had the exact same issue. I've read online that this might be a stock card reader causing this, so I've bought a fairly cheap replacement and the issue is now gone.