But it's always long enough to save your data and do a proper shutdown instead of having your computer just drop.Īlmost every OS upgrade gets a couple of articles about the "disaster" usually including the thought that while Jobs was in control this would never have happened. How long depends on how much AC power it has to produce to keep the device running. Power goes out, the computer keeps running on the UPS' internal battery. They're also a huge benefit in brownouts or blackouts. APC (American Power Conversions) is probably the best known brand. Any device that gets still gets zapped behind the UPS is covered by the company. Each UPS comes with a large warranty replacement guarantee. They protect the equipment against power surges, and even near lightning strikes. I have pretty much all of our equipment on UPS devices (Uninterruptible Power Supply). In this case, borked firmware - Mac no boot. Without the update, the Mac will not be able to boot to an APFS drive, or even have one appear on the desktop, in Disk Utility, or anywhere else.Īs with any firmware update, you must ensure the device cannot lose power during the operation. The firmware update is necessary so the Mac can recognize an APFS drive, which the partition on any SSD is converted to when High Sierra is installed.
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