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请在发帖前在社区中进行相关问题搜索，以避免重复提问。
问题描述
请详细描述您所遇到的问题：
- 描述内容：系统备份与恢复中找不到U盘？
系统与设备信息
-
硬件与系统配置：
- 处理器：I N T E L 四核J1900
- 显卡：（如有独立显卡，请标明）
- RAM（运行内存）：4G
- 存储容量：500G
- FydeOS版本：V19
-
相关系统日志：
- 访问 Chromium 浏览器并输入
/var/log/messages以获取日志。 - 日志内容：
-
2026-08-27T02:45:40.991480Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:41.993207Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:42.759365Z ERR shill[897]: ERROR shill: [bluetooth_bluez_proxy.cc(50)] Failed to query BT 'Powered' property 2026-08-27T02:45:42.759612Z ERR shill[897]: ERROR shill: [bluetooth_manager.cc(113)] GetAvailableAdapters: Failed to query BT powered state from BlueZ 2026-08-27T02:45:42.759855Z ERR shill[897]: ERROR shill: [wifi.cc(3993)] wlan0: Failed to query available BT adapters 2026-08-27T02:45:42.995073Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:43.253004Z NOTICE temp_logger[30453]: acpitz:26C soc_dts0:56C soc_dts1:57C PL1:8.000W 2026-08-27T02:45:43.996935Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:44.997692Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:45.591567Z ERR dnsproxyd[5594]: ERROR dnsproxyd: [resolver.cc(383)] {arc:eth0} Failed to do ares lookup: Timeout while contacting DNS servers 2026-08-27T02:45:45.998697Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:45:49.001497Z ERR resourced[3041]: message repeated 3 times: [ wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2))] 2026-08-27T02:45:50.002695Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:46:06.026104Z ERR resourced[3041]: message repeated 16 times: [ wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2))] 2026-08-27T02:46:07.027861Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:46:28.054999Z ERR resourced[3041]: message repeated 21 times: [ wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2))] 2026-08-27T02:46:29.056909Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2)) 2026-08-27T02:46:36.066934Z ERR resourced[3041]: message repeated 7 times: [ wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2))] 2026-08-27T02:46:37.068431Z ERR resourced[3041]: wait_psi_monitor_memory_event returns error: Err(Failed to open /proc/pressure/memory#012#012Caused by:#012 No such file or directory (os error 2))
- 访问 Chromium 浏览器并输入
注：若丢失 FydeOS 订阅，请参考此篇 FAQ 进行处理。
