But OS X Mountain Lion is sold in the App Store as a digital download — no physical disk is provided. I recommend creating an ISO image from a Windows installation media rather than trying to make an external optical drive work.With previous versions of OS X, you could have used the installation DVD to fix problems. An emergency drive (also referred to as an OS X Recovery Disk) can help you repair the hard disk, reinstall the operating system, and restore from a Time Machine backup to get your computer back fast.One of the gotchas when installing Windows using Boot Camp occurs if you replace your Macs optical drive with a second hard drive in which case the system may not recognize an external drive at boot time. Creating a bootable USB flash drive with a Windows system.It’s a good idea to have a bootable emergency drive on hand, just in case disaster strikes your Mac. When you click Erase, a dialog will pop up where you can configure some options.Before you can install the current versions of IBM QRadar Packet Capture, you must install the.Choose use a linux-swap and thats all for that one. Highlight the swap partition and click Change. Use the partition as ext4, b.Evaluating Your Emergency Drive OptionsIt can happen to any of us, even those who own brand-new Macs. You’ll thank yourself for taking the time to complete this project. Carry it in your pocket or put it on your keychain so it’s available if the worst-case scenario occurs. This will most likely be /dev/sdb.Create your own bootable OS X USB drive, of course! It’s easy, and if you’ve already purchased OS X and have a USB drive that’s 1 GB or larger, it’s completely free.
If there’s a problem with your computer, it can network-boot from Apple’s servers. When you can’t boot from the regular startup disk, chances are you won’t be able to boot from the Recovery HD either.Internet Recovery: Macs purchased after OS X Lion was released have an additional feature called Internet Recovery, which works even if your internal hard drive is damaged. (To use the Recovery HD partition as your startup disk, hold down Command-R at startup or, if that doesn’t work, option.) But the Recovery HD probably won’t work if the internal hard drive is damaged. But if you don’t want to create a USB drive, you may have access to two other types of emergency drives, depending on when you purchased your Mac.Recovery HD: Every Mac running OS X Lion and later has a hidden Recovery HD partition that can be used to boot the computer and repair the hard disk. This device is self-contained and kept entirely separate from your computer — and any potential problems associated with it. For situations like this, you need an emergency drive on hand to start up your computer and troubleshoot the problem.Emergency USB Drive: Creating a bootable USB drive is your safest bet. Convert mac files for pcDisable FileVault before proceeding with these instructions — you can enable it again after you have created the recovery disk.Here’s how to create an emergency USB drive:Connect a hard drive or USB drive to your computer. In short, it’s the perfect safety net for those rare times when your internal hard drive is hosed.Warning: You cannot create a recovery disk while FileVault is enabled on your computer. This drive provides you with all the tools you need to troubleshoot problems, repair the hard drive, reinstall OS X, and restore from a Time Machine backup. We recommend the Amazon Basics 8 GB USB Flash Drive, which is a simple and affordable option available for less than $10.The best option is a Recovery HD partition on a bootable USB drive. But even if your Mac has this feature, you’ll still benefit from having an emergency drive, as it can take a while to download the Recovery HD partition.Purchasing a USB Drive for Your OS X Recovery DiskIf you don’t have a spare USB drive, you’ll need to purchase one. If none are found, your Mac downloads and boots from a Recovery HD image. Make A System Boot For Old Os X Versions External Hard Drive For Free From AppleThe Recovery Disk Assistant creates the recovery disk, as shown below. The Recovery Disk Assistant window appears, as shown below.Authenticate with your administrator username and password. It’s available for free from Apple’s website.Accept the license agreement. (If you don’t create a partition, this process will use all of the available space on the drive, no matter how large it is.)Open the Recovery Disk Assistant application.
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