#Clean install mac os sierra imac 2011 how to#
There are many DIY procedures on the internet how to do this (for High Sierra).all of them use the Terminal app as part of the procedure. The biggest hassle was creating the bootable USB thumb drive installer for High Sierra. To download this via the Mac App Store you will need access to a supported. 3) Download a copy of macOS Sierra 10.12. 2) Format it as GUID Partition Map, Mac OS Extended (Journaled) using the Disk Utility application.
1) Find yourself an 8GB or larger USB drive or external hard drive partition. It has always worked great for me when making bootable installers (before High Sierra). I recently did a clean install of High Sierra on a 2010 Mac Pro (brand new had no previous macOS installed). Instructions to install macOS Sierra on older Macs. It makes creating a bootable USB thumb drive VERY easy. Now I want to take advantage of this migration from my old HDD to the SSD and make a clean install, as much as possible, to clean old files from old installations, etc. The obvious advantage to this approach is that it aims to preserve user. There's an app called DiskMaker X (free/30 day trial). Hi, I have this new SSD inside my Mac Pro 2010. The method we are going to outline here will reinstall macOS system software versioned as High Sierra or Sierra without formatting or erasing the Mac, instead only macOS Sierra 10.12 system software will be reinstalled (or macOS High Sierra 10.13, whichever is applicable).
#Clean install mac os sierra imac 2011 update#
The 3rd or 4th procedure I tried (I think it was from Engadget).worked fine.Īlso be aware.if High Sierra has never been installed on a computer previously.a firmware update may be needed first. The first 2-3 procedures I tried didn't work (not sure if there was a typo in the statement in the procedure online or what). The unfortunate part is some of them don't work properly.Īll of them include the long statement you need to copy & paste into Terminal to create the bootable USB installer.
I recently did a clean install of High Sierra on a 2010 Mac Pro (brand new had no previous macOS installed).
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