Nexus 7（2013年，第二代）平板电脑出现问题。

我重新启动了平板电脑，当它再次重新启动时，它显示“ Google”徽标，然后站在那儿。我等待它（大约20分钟），但是它什么也没做。

尝试恢复出厂设置... [失败]

我查看了许多建议进行硬重置或恢复出厂设置的视频，因此我尝试这样做。进入后Recovery mode，我注意到一些错误消息出现在屏幕底部，它们是：

E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_install
E:Can't open /cache/recovery/last_install
E:Failed closing /dev/block/platform/msm_sdcc.1/by-name/misc (I/O error)
E:failed to mount /cache (invalid argument)

然后我选择了wipe data/factory reset选项并执行它。它开始格式化，/data但随后清除了类似的错误（在这里复制日志）：

-- Wiping data...
Formatting data...
E:failed to mount /cache (invalid argument)
Formatting cache...
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_install
E:Can't open /cache/recovery/last_install
Data wipe complete.
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
E:failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/last_install
E:Can't open /cache/recovery/last_install
E:Failed closing /dev/block/platform/msm_sdcc.1/by-name/misc (I/O error)
E:failed to mount /cache (invalid argument)

在这里，我显示了恢复错误消息的图像

尝试解锁设备... [失败]

有些页面和论坛建议刷新并安装另一个ROM，我已选择Cyanogenmod并按照Cyanogen Wiki页面中显示的步骤进行操作。第一步是解锁设备，此过程开始格式化/data，然后再格式化“ / cache”，但同样无法安装。

最后...我该如何解决这些问题？

尝试启动fastboot并运行fastboot format cache，然后运行fastboot erase cache。

我看到了一个非常相似的问题，但是在我的情况下，“格式化...”步骤并未出现失败的安装消息。在我看来，您的设备存在硬件问题-如果格式失败，导致无法安装生成的分区，那么除了尝试保修维修外，您将无能为力。