1, check whether the power supply is connected.

2. Whether there is electricity in the wiring board.

3. Whether the power adapter is in good condition.

Finder Tabs allows users to pull left and right windows under one Tab, which is similar to the paging operation of Safari browser. Users can switch and reorder in multiple Finder tabs at will, and the operation is quite simple, just drag and drop. Finder will support full-screen mode, allowing users to enjoy a more convenient operation experience.

Extended data:

The priority of UNIX processes is reduced, which is lower than that of suspended programs to reduce the occupation of CPU resources. For those programs designed to run at full speed in the background, the system will impose more severe restrictions.

Timer scheduling technology, which is only turned on when the notebook is powered by battery. OSX system will adopt the policy of "constant CPU counter", including disk and network resources, as well as all requests.

Like wifi connection, the system upgrade notification is triggered, so an idle macbook may be harassed by various program requests, which makes the CPU have to be active all the time, making the CPU and disk unable to really enter the power saving mode.

Baidu Encyclopedia -mavericks (OSX operating system)