Clean install tips High Sierra

Basic Steps for Upgrading OS X

How to get macOS Sierra - Apple Support

1. Personally, I would install on a freshly erased disk or partition.
2. Format using HFS+. Do not use APFS just yet.
3. Download the High Sierra installer from the App Store.
4. Create a bootable USB stick for safety.
5. Boot from the USB stick using OPTION boot.
6. Follow directions to install High Sierra.

Bootable USB Installers

First, review this introductory article: Create a bootable installer for OS X Mavericks or Yosemite - Apple Support. Second, see this How To outline for creating a bootable El Capitan installer. Simply replace the Terminal command with the one from the preceding article by copying it into the Terminal window. You will need an 8GB or larger USB flash drive that has been partitioned and formatted for use with OS X.

Drive Partition and Format

1. Open Disk Utility in the Utilities' folder.
2. After Disk Utility loads select the drive (out-dented entry with the mfgr.'s ID and size) from the side list.
3. Click on the Erase tab in the Disk Utility toolbar. Name the drive, "MyVolume". <---- IMPORTANT!
4. In the drop down panel set the partition scheme to GUID. Set the Format type to Mac OS Extended (Journaled.)
5. Click on the Apply button and wait for the Done button to activate. When it does click on it.
6. Quit Disk Utility.

Create Installer

Open the Terminal in the Utilities' folder. Choose the appropriate command line (in red) depending upon what OS X installer you want. Paste that entire command line from below at the Terminal's prompt:

Command for macOS High Sierra:

sudo /Applications/Install\ macOS\ High\ Sierra\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra\ Beta.app

Command for macOS Sierra:

sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ Sierra.app

Command for El Capitan:

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app

Command for Yosemite:

sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Yosemite.app

Command for Mavericks:

sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Mavericks.app

Press RETURN. You will be asked for your admin password. It will not echo to the Terminal window. Then press RETURN again. Wait for the return of the Terminal prompt signifying the process has completed. It takes quite some time to finish. Be patient.

Boot Using OPTION key

1. Restart the computer.
2. Immediately after the chime press and hold down the "OPTION" key.
3. Release the key when the Boot Manager screen appears.
4. Select the disk icon of the USB stick.
5. Click on the arrow button below the icon.

APFS currently only works on SSDs. It does not fully support Time Machine. Does not work with Fusion Drives. Given that it is so new and incomplete I would not recommend using it. If your startup disk is an SSD and you must have APFS, then be sure to turn off TRIM if you have enabled it. Keep in mind that all you think you know about Disk Utility you will find does not work on APFS formatted disks unless you learn to use the Terminal.

Hmmmm... This is interesting.

I am having this trouble: Re: macOS High Sierra – Huge System Storage. So, once Apple Support said I should reinstall macOS – because they said there is no other solution for this problem – I came here to learn how to make a clean instalation.

Do you think this might be a consequence of this incompatibility of AFS?

My MacBook Pro is new and top of the line (bought in March/2017), but I used Time Machine with backups originated on my oldest MacBook (White, Late 2009).

I do not know. What I do know is there are downsides to APFS especially if you don't know how to fix problems when they arise. I know that once you create and use an APFS formatted disk you will not be able to easily convert it back to HFS+. I know APFS should not be used on HDDs or Fusion Drives. And, I know that APFS is not recommended for use on a Time Machine backup HDD or SSD.

As a general rule, you should not restore or clone any system files from an earlier version of OS X than the one that came pre-installed on a new computer. So, yes, it's possible what you did may have contributed to your problem depending on what you restored from the Time Machine backup.

Apple Support said its not possible, in my case, do something to fix this problem. They suggest a brand new installation (I already made two instalations over).

Do you think if I do this, but restore only my personal files with TimeMachine, may help or solve the problem?

I do not know what to do. For one side, I think this may solve the problem of storage and heating. For other, I do not think if this will solve the problem at all, once I've reading about a lot of High Sierra problems.

The only problem is I'm in Brasilia (Brazil's capital). In my country, the Genius Bar only exists in two cities: São Paulo and Rio de Janeiro (because they are economics capitals).

By phone, technical support was able to understand my problem, because I sent them some images of what is happening and explain the situation. But they understood the only solution would be to format the MacBook Pro and make a fresh/clean installation.

But I've reading about many problems of AFS, which still make me have doubts if a clean installation can solve the problem, specially because all my files are backed up in Time Machine (which it seems AFS does not support).

For me (I'm a lawyer), the most difficult part is reinstall all the drivers and programs to work in Judiciary (in Brazil, we are migrating physical process to eletronic ones). So, make a clean installation is not a easy job (I have to format the ssd, make a clean installation of macOS High Sierra, reinstall drivers and apps, restore files from a backup and hope – only hope – this can solve all problems).

sir,

I have a problem with the installation of windows 7 on my late 2011 MBP after installing High Sierra 10.13.2

I am using the late 2011 MBP with a crucial SSD & crucial 16 gb RAM.

i have formate the SSD using the Mac OS Extended ( Journaled ) & GUID options.

I installed the High Sierra with a bootable I have made.

I start of with bootcamp, installing a DVD of Win 7 from a external drive.

on the re boot I get a black screen with something like a dos prompt flashing in the right top corner.

please could you help

Why did you say to use "HFS+. [but] Do not use APFS just yet"?

What is the problem with "AFS"?

Given the newness of your model and that it is under warranty I would make an appointment at the Apple Genius Bar for service. If you need to find an Apple Store - Find a Store - Apple.

Watch this video for complete installtion process:

Clean install/reset your mac(High Sierra) 2017-Full installation guide with easy and safe steps - YouTube