![]() ![]() If either Mac lacks a FireWire or Thunderbolt port, you’re out of luck. T: Target Disk Mode - What if you want to boot from another Mac’s drive using Startup Manager? You can connect the Macs via FireWire or Thunderbolt, and then put the other Mac into Target Disk Mode, which lets it serve as an external drive. If you have a bootable external drive, booting from that drive can also help you isolate problems or provide a different environment, such as a different version of OS X. Startup Manager may also help identify a flaky hard drive if the drive you’re looking for doesn’t appear in Startup Manager, you know you have a problem. However, you can also use it to force a boot from your primary drive if your Mac is stubbornly booting from another disk. Startup Manager is primarily useful for booting from an alternative drive, like a system clone, USB thumb drive, or a Boot Camp partition. Press and hold Option as your Mac boots to enter the Startup Manager, which lets you select which disk to boot from. Option: Invoke Startup Manager - The first startup key every Mac user should know is the Option key. Not all are useful on today’s Macs, but we wanted the list to be complete. Here are fifteen startup key combinations that can save the day when things go wrong. When the proverbial manure hits the fan and prevents your Mac from booting as you want, knowing the right startup key combination can save the day, whether you boot into Safe Mode, Recovery, Apple Diagnostics, or from another disk entirely. #1611: OS updates, RIP iPod touch, iCloud Drive shared folder data loss risk, KDEConnect links iPhone to Linux. ![]() #1612: OS suggestions, new accessibility features, higher cellular prices, Chrome OS Flex for old Macs, Memorial Day hiatus.#1613: M2 MacBook Air and 13-inch MacBook Pro, long-awaited features coming to OS, watchOS 9, TidBITS website changes, tvOS and HomePod update.#1614: 2022 OS system requirements, WWDC 2022 head-scratcher features, travel tech notes from Canada.#1615: Why Stage Manager needs an M1 iPad, Limit IP Address Tracking problems, Citibank cryptocurrency confusion.
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