RT 进入设置一点击检查更新就马上提示已为最新版本 update_engine.log内容： [0915/174422:INFO:main.cc(182)] Chrome OS Update Engine starting [0915/174422:ERROR:boot_control_chromeos.cc(118)] Couldn't find the slot number corresponding to the partition /dev/sda4, number of slots: 2. This device is not updateable. [0915/174422:ERROR:boot_control_chromeos.cc(81)] Ignoring BootControlChromeOS failure. We won't run updates. [0915/174422:INFO:real_system_state.cc(74)] Booted in dev mode. [0915/174422:INFO:real_system_state.cc(75)] Booted non-official build. [0915/174422:INFO:omaha_request_params.cc(66)] Initializing parameters for this update attempt [0915/174422:INFO:omaha_request_params.cc(177)] Download channel for this attempt = stable-channel [0915/174422:INFO:omaha_request_params.cc(77)] Running from channel stable-channel [0915/174422:ERROR:hardware_chromeos.cc(156)] Unable to read crossystem key hwid [0915/174422:INFO:metrics_utils.cc(350)] Payload Attempt Number = 0 [0915/174422:INFO:payload_state.cc(880)] Full Payload Attempt Number = 0 [0915/174422:INFO:payload_state.cc(906)] Current URL Index = 0 [0915/174422:INFO:payload_state.cc(554)] Current download source: Unknown [0915/174422:INFO:payload_state.cc(950)] Current URL (Url0)'s Failure Count = 0 [0915/174422:INFO:payload_state.cc(939)] URL Switch Count = 0 [0915/174422:INFO:metrics_utils.cc(367)] Update Timestamp Start = 9/8/2018 6:54:08 GMT [0915/174422:INFO:payload_state.cc(1121)] Update Duration Uptime = 0s [0915/174422:INFO:payload_state.cc(1162)] Current bytes downloaded for HttpsServer = 0 [0915/174422:INFO:payload_state.cc(1187)] Total bytes downloaded for HttpsServer = 0 [0915/174422:INFO:payload_state.cc(1162)] Current bytes downloaded for HttpServer = 0 [0915/174422:INFO:payload_state.cc(1187)] Total bytes downloaded for HttpServer = 0 [0915/174422:INFO:payload_state.cc(1162)] Current bytes downloaded for HttpPeer = 0 [0915/174422:INFO:payload_state.cc(1187)] Total bytes downloaded for HttpPeer = 0 [0915/174422:INFO:metrics_utils.cc(342)] Number of Reboots during current update attempt = 0 [0915/174422:INFO:payload_state.cc(1199)] Num Responses Seen = 0 [0915/174422:INFO:prefs.cc(122)] rollback-happened not present in /mnt/stateful_partition/unencrypted/preserve/update_engine/prefs [0915/174422:INFO:payload_state.cc(1086)] Setting rollback-happened to 0. [0915/174422:INFO:prefs.cc(122)] rollback-version not present in /mnt/stateful_partition/unencrypted/preserve/update_engine/prefs [0915/174422:INFO:payload_state.cc(1348)] p2p First Attempt Timestamp = 1/1/1601 0:00:00 GMT [0915/174422:INFO:payload_state.cc(1333)] p2p Num Attempts = 0 [0915/174422:INFO:daemon.cc(89)] Waiting for DBus object to be registered. [0915/174422:INFO:update_manager-inl.h(52)] ChromeOSPolicy::UpdateCheckAllowed: START [0915/174422:INFO:enough_slots_ab_updates_policy_impl.cc(31)] Not enough slots for A/B updates, disabling update checks. [0915/174422:INFO:policy_utils.h(58)] decision by EnoughSlotsAbUpdatesPolicyImpl::UpdateCheckAllowed [0915/174422:INFO:update_manager-inl.h(74)] ChromeOSPolicy::UpdateCheckAllowed: END [0915/174422:WARNING:update_attempter.cc(872)] Updates permanently disabled. [0915/174422:INFO:prefs.cc(122)] attempt-in-progress not present in /var/lib/update_engine/prefs [0915/174422:INFO:update_manager-inl.h(52)] ChromeOSPolicy::P2PEnabled: START [0915/174422:WARNING:evaluation_context-inl.h(43)] Error reading Variable au_p2p_enabled: "No value set for au_p2p_enabled" [0915/174422:INFO:update_manager-inl.h(74)] ChromeOSPolicy::P2PEnabled: END [0915/174422:INFO:update_attempter.cc(1544)] Not starting p2p at startup since it's not enabled. [0915/174422:INFO:update_manager-inl.h(52)] ChromeOSPolicy::P2PEnabledChanged: START [0915/174422:WARNING:evaluation_context-inl.h(43)] Error reading Variable au_p2p_enabled: "No value set for au_p2p_enabled" [0915/174422:INFO:update_manager-inl.h(74)] ChromeOSPolicy::P2PEnabledChanged: END [0915/174506:INFO:update_attempter.cc(1270)] Marking booted slot as good. [0915/174506:INFO:subprocess.cc(153)] Subprocess exited with si_status: 1 [0915/174506:INFO:subprocess.cc(157)] Subprocess output: ERROR: partition 3 is not a ChromeOS kernel
[0915/174536:INFO:common_service.cc(95)] Attempt update: app_version="" omaha_url="" flags=0x0 interactive=yes RestrictDownload=no [0915/174536:INFO:update_attempter.cc(791)] Forced update check requested. [0915/174536:INFO:update_attempter.cc(1621)] Non-official build; allowing any update source. [0915/174536:INFO:update_manager-inl.h(52)] ChromeOSPolicy::UpdateCheckAllowed: START [0915/174536:INFO:enough_slots_ab_updates_policy_impl.cc(31)] Not enough slots for A/B updates, disabling update checks. [0915/174536:INFO:policy_utils.h(58)] decision by EnoughSlotsAbUpdatesPolicyImpl::UpdateCheckAllowed [0915/174536:INFO:update_manager-inl.h(74)] ChromeOSPolicy::UpdateCheckAllowed: END [0915/174536:WARNING:update_attempter.cc(872)] Updates permanently disabled.