- #How to clean install mac os x sierra from usb pro
- #How to clean install mac os x sierra from usb download
Follow this IFIXIT guide: MacBook Pro 13" Unibody Mid 2012 Hard Drive Replacement. If the system starts up you can then shut down the system and swap over the drives. Restart the system and press the Option key so you can select the SSD as the boot up drive. Once done you'll want to double check if it's working correctly. Run the installer selecting the SSD drive it will install a fresh OS onto your SSD. This is the Install DMG of macOS Sierra, downloaded from Apples.
#How to clean install mac os x sierra from usb download
The next step is to download from the Apps Store the OS installer. To continue, restart your Mac while pressing the Option Key. With the SSD plugged in to your system you'll need to run Disk Utility to partition the drive with GUID and format it with Mac OS Extended (Journaled) partition. Clean Install macOS High Sierra from USB Bootable Drive Take your bootable USB and connect it to your Mac. There were also quite a few tweaks and fixes that made users want to get the latest Mac OS High Sierra download at the time. Comparing to upgrading to macOS High Sierra, a clean install is more likely to give your Mac a better performance and it is often used to fix Mac system problems, such as speeding up a slow Mac.
Follow the instructions on the screen in the macOS installer window. Select the bootable USB drive and click Continue. Switch on your Mac and hold the power button till the Startup Options window appears, showing bootable volumes. Here's one unit: Startech 2.5" SATA to USB adapter for 2.5" drives. Mac OS High Sierra launched with a few new features such as an enhanced Apple Photos with new capabilities and many security updates and fixes. Clean install of Mac OS, on the other hand, will delete all current data on Mac's drive and install on the drive a with a fresh copy of macOS High Sierra. Plugin the bootable USB installer drive into your Mac system. You'll need to get a SATA to USB adapter so you can connect your SSD externally to your system. Mavericks and newer OS's have firmware updaters within the OS installer.