Here's the IFIXIT guide: Installing iMac Intel 21.5" EMC 2308 Dual Drive So if you give up your ODD you can switch it out with a special career iMac & Mac mini Dual Drive Enclosure to hold the SSD drive. So you'll need to give up one for the SSD. Once your bootable USB installation media is ready, remove it and insert it into your Mac, power it on, hold down the Option key, and select the USB you just created to reinstall Mac OS X.Your system only has two SATA ports and both have something attached - HDD & ODD (Optical drive). Depending on your computer and other variables, it could take one or two hours to complete the process. Use the Restore Disk Image to Drive dialog box to browse for the DMG file with the installation files for Mac OS X Yosemite in this case, and click the OK button to create a bootable USB of the operating system. In the warning dialog box, click the Yes button. On the left pane, you’ll see all the Windows PC drives listed right-click the USB drive you intend to use to reinstall Apple’s OS X and select the Restore with Disk Image option. (You’ll be prompted to Enter Key or Run because we’ll be using it once, click the Run option.)
Right-click the TransMac software icon and Run as administrator. Make sure you take off any important documents.) (Remember that all the data in the USB will be erased. Insert the USB drive that you’ll use to fix your installation of OS X. (If you want to support the developer, you can purchase the full version.) Quick note: TransMac is a paid software, but it has a 15-day trial solution that gives us more than enough time to move the DMG files to the USB drive from Windows. One high-quality USB flash drive with 16GB of storage.Requirementsīefore you dive into this guide, you’ll need a few things:
These instructions will also work for Windows users running Mac OS X on a virtual machine and needing to upgrade to the latest version. However, if you find yourself in a scenario where your device (iMac, MacBook Pro, Air, Mac Pro, or Mini) is not responding, and you happen to have a Windows 10 device, then you can still be able to make a USB bootable installation media for your Mac OS X to reinstall the operating system using the Recovery Assistant. This is why it’s recommended that you make a Mac OS X bootable USB when your Mac is in working conditions. If you’re still using a Mac OS X, the time will come when your computer won’t boot, or a problem may arise where you can’t take control of the device, and booting from an OS X installation media will be required.
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