Prohibited logo when booting Sierra installer

[alexander750]

Installed El Capitan on the spare HD (it previously held Lion), using the iMac10,1 system definition—oddly, that's what the installer originally thought my Hackintosh was! (I normally use MacPro3,1.) After some hassles, got everything working properly except sound (argh).

Signed up for the Sierra beta program and got my copy. Followed the install process for a Legacy BIOS machine. Oddly, Clover (3625) installed to the main partition rather than EFI. Copied in the appropriate config.plist and kexts, along with the tonymacx86 theme.

Reboot, all seems OK, white-on-black Apple logo with progress bar, then...PROHIBITED.

EDIT: May have something to do with the GTX 750ti. I'll check the graphics settings...tomorrow.

 

[KONKY1]

Run the USB with -v mode (you can select it from the clover bootloader)

 

[Stork]

Use the iMac14,2 System Definition to overcome the Prohibited logo. Lots of Mac Pros, iMacs, MacBooks and MBPs before 2010 are not supported by Sierra which is why you're getting the Prohibited logo.

 

[alexander750]

Run the USB with -v mode (you can select it from the clover bootloader)

Tried it. Boot process appeared normal, until the message "HID: Legacy Mode 2" appeared. Shortly afterward, the screen was overwritten with gibberish characters (something somewhere crashed, I'd guess) and the Prohibited logo popped up.

Perhaps there's an incompatible USB device somewhere?

Re graphics issues: The config.plist suggested by tonymacx86 has Intel graphics injection. Turned that off, since this mobo doesn't have onboard graphics.
Tried the nv_disable=1 flag. Same result.
Tried the nvda_drv=1 flag. Same result.

My next move is to put Clover back in the EFI partition, where it most likely belongs.

Use the iMac14,2 System Definition to overcome the Prohibited logo. Lots of Mac Pros, iMacs, MacBooks and MBPs before 2010 are not supported by Sierra which is why you're getting the Prohibited logo.

The aforementioned config.plist doesn't include a sysdef. (Neither does the one that Unibeast would ordinarily supply.) At any rate, I'd be leery of using iMac14,2 except as a last resort, since a Yorkfield is not a Haswell. Other users (e.g., VoiletDragon) have used the iMac10,1 sysdef and reported no problems.

 

[Stork]

...The aforementioned config.plist doesn't include a sysdef. (Neither does the one that Unibeast would ordinarily supply.) At any rate, I'd be leery of using iMac14,2 except as a last resort, since a Yorkfield is not a Haswell. Other users (e.g., VoiletDragon) have used the iMac10,1 sysdef and reported no problems.

iMac10,1 in Sierra? Good luck.

Reference:
http://osxdaily.com/2016/06/14/macos-sierra-compatibility-list/
http://www.everymac.com/ultimate-mac-lookup/?search_keywords=iMac10,1

 

[VioletDragon]

iMac10,1 in Sierra? Good luck.

Reference:
http://osxdaily.com/2016/06/14/macos-sierra-compatibility-list/
http://www.everymac.com/ultimate-mac-lookup/?search_keywords=iMac10,1

iMac 10.1 works fine. iMacs from 2010 works perfectly fine. Using it on my Quad Core build.

 

[VioletDragon]

Tried it. Boot process appeared normal, until the message "HID: Legacy Mode 2" appeared. Shortly afterward, the screen was overwritten with gibberish characters (something somewhere crashed, I'd guess) and the Prohibited logo popped up.

Perhaps there's an incompatible USB device somewhere?

Re graphics issues: The config.plist suggested by tonymacx86 has Intel graphics injection. Turned that off, since this mobo doesn't have onboard graphics.
Tried the nv_disable=1 flag. Same result.
Tried the nvda_drv=1 flag. Same result.

My next move is to put Clover back in the EFI partition, where it most likely belongs.



The aforementioned config.plist doesn't include a sysdef. (Neither does the one that Unibeast would ordinarily supply.) At any rate, I'd be leery of using iMac14,2 except as a last resort, since a Yorkfield is not a Haswell. Other users (e.g., VoiletDragon) have used the iMac10,1 sysdef and reported no problems.

HID Legacy Mode can be fixed by booting into Single User and reloading Kernel Cache. FakeSMC doesn't load properly sometimes.

/sbin/mount -uw/
kextcache -system-prelinked-kernel
kextcache -system-caches
exit

 

[KONKY1]

Boot without caches Or install from Clover Configurator the OSXAptioFix or OSXAptioFix 2, post results after.

 

[VioletDragon]

Boot without caches Or install from Clover Configurator the OSXAptioFix or OSXAptioFix 2, post results after.

OsxAptioFixdrv wouldn't make much difference when your booting in legacy not UEFI.

 

[KONKY1]

OsxAptioFixdrv wouldn't make much difference when your booting in legacy not UEFI.

Ahh I didn't see that he was booting in Legacy