Contribute
Register

How to Create a macOS High Sierra Public Beta Installation USB

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
19,241
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
Intel HD Graphics 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
What am I doing wrong?
You are needlessly overcomplicating things :
See Installation Guide


I understand that installing Clover on the USB stick makes it bootable. But the two attempts I have made to make it bootable fail. The package installer is not making - as far as I can tell - a bootable MS-DOS UEFI partition on the USB stick.
The EFI partition is created automatically when you format the drive as GUID, not by the Clover installer.
 
Joined
Aug 18, 2011
Messages
310
Motherboard
ASRock Z270M-ITX/ac
CPU
i7-6700K
Graphics
GTX 950 2 GB
Mac
iMac, MacBook Pro, Mac mini
Mobile Phone
iOS
You are needlessly overcomplicating things :
How?

I'm trying to describe this as exactly as possible so someone can point out my misstep.
Basically I'm following steps:
  1. Create formatted Mac OS Extended Journaled USB (is that a GUID drive?)
  2. Create install media on USB
  3. Load CLOVER
But Disk Util sees only one partition, a HFS partition on the USB. The EFI folder appears, to me, to be on the same partition. The Clover package installer is not seeing another other than a SINGLE USB partition.

Then finally after simply following steps 1, 2, and 3, the USB stick is NOT bootable on the same system that created it.

I had a similar problem using the UNIBEAST installation method a year ago. I can't remember how I worked around it exactly:

https://www.tonymacx86.com/threads/unibeast-7-1-1-does-not-create-a-efi-bootable-usb-installation-disk.239997/#post-1648708
DIskUtil-ScreenShot-USB.png
It has to be a problem with step #1, formatting the USB?

DIskUtil-ScreenShot-USB.png
 

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
19,241
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
Intel HD Graphics 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
But Disk Util sees only one partition, a HFS partition on the USB.
In Disk Utility click View then select Show All Devices.

The EFI folder appears, to me, to be on the same partition
Make sure that you install Clover in UEFI mode not Legacy.

In order to see the contents of the EFI partition it must first be mounted - You can use an app such as EFI Mounter.
 
Last edited:
Joined
Aug 18, 2011
Messages
310
Motherboard
ASRock Z270M-ITX/ac
CPU
i7-6700K
Graphics
GTX 950 2 GB
Mac
iMac, MacBook Pro, Mac mini
Mobile Phone
iOS
Here is everything the diskutil list command sees:

iMac:Config-Simple-Boot tony$ diskutil list

/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *256.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk3 255.9 GB disk0s2
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *250.1 GB disk1
1: Windows_NTFS EvanSam256 250.1 GB disk1s1
/dev/disk2 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_HFS WD_Aug2013_1T 999.9 GB disk2s2
/dev/disk3 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +255.9 GB disk3
Physical Store disk0s2
1: APFS Volume SamSSD256 186.0 GB disk3s1
2: APFS Volume Preboot 19.4 MB disk3s2
3: APFS Volume Recovery 517.8 MB disk3s3
4: APFS Volume VM 2.1 GB disk3s4

/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *8.0 GB disk4
1: Apple_HFS USB-HS-5a 8.0 GB disk4s1

Here is what EFI Mounter sees:

EFI-Diskmounter.png


There is no EFI partition seen on /dev/disk4

Thanks for the help.

I still think it is the 'erase' option of disk util application that is causing the problem.

Look at my /dev/disk0 disk. It sees it is a GUID partition scheme. That's not what is on the USB device.


TOP-USB-Media-Screen Shot.png



USB-bottom-screen-shot.png
 

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
19,241
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
Intel HD Graphics 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *8.0 GB disk4
1: Apple_HFS USB-HS-5a 8.0 GB disk4s1
PICNIC

It should look like this :
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *7.8 GB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_HFS USB 7.5 GB disk2s2
 
Joined
Aug 18, 2011
Messages
310
Motherboard
ASRock Z270M-ITX/ac
CPU
i7-6700K
Graphics
GTX 950 2 GB
Mac
iMac, MacBook Pro, Mac mini
Mobile Phone
iOS
It should look like this :
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *7.8 GB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_HFS USB 7.5 GB disk2s2
Yes. I agree it should look like that. But it doesn't. So why?

And I agree it's caused by me. What am I doing wrong?
 

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
19,241
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
Intel HD Graphics 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
What am I doing wrong?
You are failing to format the USB flash drive correctly.

Open Disk Utility.

Select the top level of your USB drive - Named HP v125w Media.
Then click Erase.
Name - USB or whatever you like.
Format - Mac OS Extended (Journaled).
Scheme - GUID Partition Map.

Click Erase.
 
Last edited:
Top