Fixing the "AU87101A UFDisk Full" Error: A Complete Guide If you are seeing an "AU87101A UFDisk Full" error,
Device not writable / readonly:
When the system reports (often displayed via admin show system or file cf1: , file cf3: ), it indicates that the active storage partition has exhausted its available blocks. This condition is critical: it can lead to configuration loss, crash dumps failing to write, and, in severe cases, a boot loop or bricked state after a reboot. au87101a ufdisk full