Fix High Sierra and iOS 11

Make the lat­est macOS work bet­ter for you

Mac|Life - - CONTENTS - Writ­ten by Alex Sum­mersby & Howa rd Oa kley

Whether you’ve yet to up­grade or have al­ready done so, dis­cover how to make High Sierra work bet­ter for you. Plus: a trou­bleshoot­ing guide to iOS 11.

up­grad­ing to the lat­est ver­sion of an op­er­at­ing sys­tem is more nu­anced than need­ing to make a full backup be­fore­hand. There may be in­com­pat­i­bil­i­ties between the sys­tem and your pe­riph­er­als and apps to in­ves­ti­gate, never mind lin­ger­ing bugs in the sys­tem.

High Sierra didn’t get off to a good start, largely thanks to some high-pro­file se­cu­rity risks in its early in­car­na­tions, and some of us have en­coun­tered our share of nig­gles with iOS 11, too – though noth­ing as bad as macOS’ is­sues. Per­haps you’ve been un­able to in­stall the up­grades at all. Whether your prob­lem is with in­stalling an up­grade, us­ing the sys­tem af­ter­wards, or in­com­pat­i­bil­ity with third-party add-ons, the fol­low­ing pages will help.

Be­fore you up­grade

Be­fore you be­gin to trou­bleshoot your ex­ist­ing High Sierra setup or in­stall the sys­tem afresh, take time to spring clean your Mac. Get ev­ery­thing in or­der, then make a backup of your en­tire sys­tem us­ing Time Ma­chine or, bet­ter, a cloning app such as Car­bon Copy Cloner ($39.99, As shown in last is­sue’s Pro­tect Your Dig­i­tal Life fea­ture, this means you’ll have a com­plete backup you can re­vert to if need be. (Af­ter you’ve in­stalled High Sierra, iron­i­cally, Time Ma­chine will au­to­mat­i­cally save a Lo­cal Snap­shot of your sys­tem be­fore in­stalling any macOS up­date.) Even if High Sierra in­stalls smoothly, peo­ple have re­ported var­i­ous prob­lems oc­cur­ring af­ter­wards, so you’ll be glad to have a backup from which to re­store such vi­tal data. Ver­ify your Mac can run High Sierra at

abouthigh­sierra. Be­yond the hard­ware needs, it must be run­ning OS X 10.8 or newer. If it’s not, in­stall El Cap­i­tan first (­cap), and then up­grade di­rectly to High Sierra: in the Mac App Store, click the Up­dates tab and you should see High Sierra in the list. If it’s not there, look in the Fea­tured tab, or use the Search field at the top right of the win­dow to find it.

If you’re up­dat­ing sev­eral Macs and don’t want to have to down­load the in­staller each time, it’s pos­si­ble to cre­ate a bootable macOS in­staller on a USB flash drive or an ex­ter­nal hard drive with at least 12GB of space. Any data al­ready on this will be erased. You’ll need to use a Mac with High Sierra, Sierra 10.12.5, or El Cap­i­tan 10.11.6 or newer, with an in­ter­net con­nec­tion to down­load the in­staller. Once down­loaded, the in­staller will open au­to­mat­i­cally; press Cmd+Q to quit it, then lo­cate the In­staller in the Ap­pli­ca­tions folder. If you’re com­fort­able us­ing Ter­mi­nal, fol­low the steps Ap­ple gives at­ate-in­staller. Al­ter­na­tively, try In­stall Disk Cre­ator (free,

mac­; in it, se­lect the tar­get USB drive, then the macOS in­staller, and click Cre­ate In­staller. Eject the drive when it’s ready. To use it, con­nect it to the Mac you want to up­grade, restart the Mac and hold Alt, choose the in­stall disk as the one to start up from, and the in­staller will run.

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