Trying to update to High Sierra, missing firmware partition.

[DonutHands]

Deleted, restarted, still no go

 

[P1LGRIM]

Deleted, restarted, still no go

Try with your Windows disk (and any others) disconnected.

Try and be a bit more expansive with your replies - "still no go" is difficult to diagnose.

 

[DonutHands]

All disks disconnected aside from mac boot drive. Original issue persists.

Boot drive is greyed out in Install macOS High Sierra install app with message:
"You may not install to this volume because it is missing a firmware partition."

 

[P1LGRIM]

All disks disconnected aside from mac boot drive. Original issue persists.

Boot drive is greyed out in Install macOS High Sierra install app with message:
"You may not install to this volume because it is missing a firmware partition."

What is the make/model of your disk ?

 

[DonutHands]

500 GB SSD - Samsung 840 Evo

Not sure if this plays into it, in disk utility it shows as an external drive, its never mattered before.

 

[P1LGRIM]

500 GB SSD - Samsung 840 Evo

Not sure if this plays into it, in disk utility it shows as an external drive, its never mattered before.

I just did what you should have done in the first place and used Google to search for :
”you may not install to this volume because the computer is missing a firmware partition”

You are not alone - See if you can find a solution there.

 

[DonutHands]

Oh well, looks like I'm staying at 10.12.6 till these 10.13.4 issues are sorted out my much smarter/patient people than I.

 

[SiliconVoid]

use kext tool to load the (AHCI_Intel_Generic_SATA) kext, reboot, and your drives will be seen as non-removeable, and internal..

 

[grim102]

use kext tool to load the (AHCI_Intel_Generic_SATA) kext, reboot, and your drives will be seen as non-removeable, and internal..

Can anyone give explicit instructions on how to do this?

 

[BreBo]

@grim102, please update your profile (personal details) with your Motherboard (Mobo), CPU and iGPU or Graphics Card.
If you have a prebuilt computer enter make and model instead of motherboard (Mobo).

Profiles are mandatory so that others can assist you.