My kobo device got stuck in a boot loop and when I opened it up I saw the internal storage was a micro sd card. Put it in my computer and found a full linux sys

My kobo device got stuck in a boot loop and when I opened it up I saw the internal storage was a micro sd card. Put it in my computer and found a full linux system. Deleted the user database and the device booted again. I also saw there was a recovery partition so I probably could have fixed it from a button combo but still, cool stuff.