But what macbook air tutorial pdf the mentioned auto-boot features? Unfortunately, Apple does not provide user-facing switches in System Preferences to control the new boot on power and boot on lid capability. Touch ID button if you’re old-school. The change will be permanent until you reset your Mac’s NVRAM.
In both instances, you may be asked to enter your administrative password. Keep in mind that turning boot on power and boot on lid off shall re-enable the classic Mac startup chime, too. For those wondering, it is not possible to patch in a new boot sound. To disable the startup chime permanently on older Macs, check out this tutorial from Anthony. To disable the startup tone temporarily on your Mac, just mute the sound with the mute key.
Once the computer is silenced, the startup tone will no longer play until you un-mute the volume. Get updates directly into your inbox. This website is not affiliated with Apple. The life expectancy of a notebook battery is mostly based on the battery cycle count. Once that battery cycle count has reached the limit set by the manufacturer, it is considered consumed, and although the laptop might still perform the same, battery life might deplete rapidly, a clear sign it is time to replace that battery.
How do you calculate a battery cycle? A battery cycle count is calculated based on the use of all the battery’s power, but not necessarily on a single charge. System Report, and select the Power tab, under Hardware. In the right panel, you will find the Cycle Count, as showed below. Knowing your battery cycle count is great, but it doesn’t help much if you don’t know what your machine’s limit is.
The limit is set by Apple and gives a good indication of the overall life expectancy of your battery. Compare the calculated cycle count to Apple’s limits set to specific machines to find out how your battery is fairing. As you can see above, I have reached 351 battery cycles, or about one third of the limit, so it seems that theoretically, my battery should still last a while longer. Keep in mind that battery cycle count is meant to give you an approximate idea of your battery life expectancy. Obviously, if your battery is performing poorly, you can always get it replaced even though you haven’t hit the limit set by Apple. Get updates directly into your inbox.
Apple seeds second beta of macOS High Sierra 10. This website is not affiliated with Apple. We respect its storied history, and value the contributions of its many readers, but we can no longer support it at the level it deserves. Thanks for your many years of attention and everything you’ve done to make the site such a valuable resource. I sometimes find the Java setup on my various Apple devices to be a mystery. The first thing is that you have to do some configuring of both Java and Safari to get the applet to run at all. Once that was all done, I could log in from all my Macs, fire up the applet and establish a secure connection.