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donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
Well... I sold my two Mac Pro, one of the with Monterey 100% working, all OK, but the second......

I has instalen and working Monterey, but the buyer wants High Sierra installed... but I can't install it!!!

When boot from the USB installer or SSD installer (I was made a installer with an Sata SSD, thinking that the error will be in the USB, but no...) at the begining of load stop.... I attach a video.... what can I do???

The setup of the Mac Pro is:

- Mac Pro 5.1 2012
- Single proccessor W3660
- 48Gb Ram 1333Mhz
- Ali Radeon 5870 1Gb
- HDD 1Tb Seagate
- SSD NVME Samsung 870 EVO 250Gb

If I boot with this setup in Monterey all works perfect (except graphics, very slow). OpenCore 0.7.4 is installed in the NVME drive, and I know that will be erased with the High Sierra install, this is no problem...

If I take out the NVME with OpenCore, the problem it's the same...

Video:


HELP!
 

sfalatko

macrumors 6502a
Sep 24, 2016
636
364
I would ask @tsialex as I think he could quickly give you the answer. As a stab in the dark the issue might be the APFS format of the drive. Try reformatting the drive as HFS+ and see if that works.
 

tsialex

Contributor
Jun 13, 2016
13,409
13,556
Do a fully erase. Boot the High Sierra installer and do something like this below, from the macOS installer Terminal:

Code:
diskutil list
diskutil erase disk jhfs+ "Macintosh HD" GPT disk0
 

donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
Do a fully erase. Boot the High Sierra installer and do something like this below, from the macOS installer Terminal:

Code:
diskutil list
diskutil erase disk jhfs+ "Macintosh HD" GPT disk0
Thanks... the problem is that don't do nothing more than you see in the video... The usb installer don't give and option, don't boot... If I take off the NVME with OC, when the usb boot arrives to these point reboot...
 

tsialex

Contributor
Jun 13, 2016
13,409
13,556
Boot a working macOS install, then nuke the drive that you want to install HighSierra from the Terminal. After that, remove all other drives and boot just the createinstallmedia High Sierra installer and then install High Sierra to the nuked disk.
 
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donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
Boot a working macOS install, then nuke the drive that you want to install HighSierra from the Terminal. After that, remove all other drives and boot just the createinstallmedia High Sierra installer and then install High Sierra to the nuked disk.
I’ll try
 

donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
@tsialex don't work...

Please, see the new video, this is the MacPro without HDD/SSD/USB, only the boot installer...



If I put again the NVME with Monterey, works fine...
 

macguru9999

macrumors 6502a
Aug 9, 2006
806
371
In the mac, just have a blank drive formatted hfs plus, not apfs. format it from an external boot drive running hi sierra or below. , or before you put it in the mac. restart with cmd opt PR 3 times if necessary. run a current hi sierra installer if you can find one. If not, clone an older system across from the external boot drive.
 

donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
In the mac, just have a blank drive formatted hfs plus, not apfs. format it from an external boot drive running hi sierra or below. , or before you put it in the mac. restart with cmd opt PR 3 times if necessary. run a current hi sierra installer if you can find one. If not, clone an older system across from the external boot drive.

I only have MacMini M1, and I can't install High Sierra on a external disk...

I mas reset the PRAM 3 times... This las the first thing I did when see the trouble.

If I put the NVME in the MacPro with Monterey, Monterey can't execute High Sierra Installer...

I'm lost, I'm not know what to do, because in theory, if I put ONLY the High Sierra Boot Installer, almost have to boot and told me that no disk are plugged to install High Sierra... Only reboot like you can see in the video...
 

steve123

macrumors 65816
Aug 26, 2007
1,141
702
It might be a firmware incompatibility. Do you have a backup of your firmware from an earlier version of macOS?
 

donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
It might be a firmware incompatibility. Do you have a backup of your firmware from an earlier version of macOS?
No, I haven't not a firmware backup... I think that the firmware is 144.0.0.0, the last for the MacPro 5.1... I mas running High Sierra -> Mojave without issues or OC... I installed OC to run Hardware Acceleration and after to run Monterey...
 

tsialex

Contributor
Jun 13, 2016
13,409
13,556
@tsialex don't work...

Please, see the new video, this is the MacPro without HDD/SSD/USB, only the boot installer...

View attachment 1970931

If I put again the NVME with Monterey, works fine...
Enable verbose boot and see where is failing, my bet is on a corrupt createinstallmedia installer. Could also be NVRAM problems, did you tried a deep NVRAM reset?

Try a deep NVRAM reset, then a fresh createinstallmedia HighSierra installer on a USB key that you are sure that works with your Mac Pro.
 
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donvito4ever

macrumors regular
Original poster
Apr 9, 2016
116
13
Spain
Enable verbose boot and see where is failing, my bet is on a corrupt createinstallmedia installer. Could also be NVRAM problems, did you tried a deep NVRAM reset?

Try a deep NVRAM reset, then a fresh createinstallmedia HighSierra installer on a USB key that you are sure that works with your Mac Pro.

What will be the better way to do the createinstallmedia and download a good macOS?
 

tsialex

Contributor
Jun 13, 2016
13,409
13,556
What will be the better way to do the createinstallmedia and download a good macOS?
You can use installinstallmacos.py and follow Apple createinstallmedia instructions.



If you can't get it working, then you probably have BootROM problems and will need a BootROM reconstruction service.
 

tsialex

Contributor
Jun 13, 2016
13,409
13,556
@tsialex you bético, you win!!!

At 4th created USB installer works!

THANKS!!
Check if your main NVRAM VSS store is not full - see what you have to do below. Don't risk sending it to the buyer and getting it back because the NVRAM corrupted itself.


 
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