CentOS 7 on iMac Pro

[d.dragun]

Hello everyone.
I try to install CentOS 7 on iMac Pro and have freeze screen on startup with this message:

Code: Select all

BCMDHD_ExitBootService: ENTER
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 0 succeeded
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 1 succeeded

And nothing more. I try to wait one hour, try to press any key but nothing is happened.

I install from USB. Use two ways to copy CentOS on USB:
1. With macOS terminal use this command to convert ISO to IMG/DMG:

Code: Select all

hdiutil convert -format UDRW -o *path for target IMG/DMG* *path for source ISO*

and then copy on USB with command:

Code: Select all

diskutil unmountDisk /dev/disk3
sudo dd if=*path for convert IMG/DMG file* of=/dev/rdisk3 bs=1m

2. Just with util Etcher.

Then I reboot my machine and hold Alt key then choose my USB (it call there EFIBoot) and click "Install CentOS 7". And take freeze screen with message on top in my topic.

I tried with Everything ISO and DVD ISO as well.

Also I try to install with rEFInd Boot Manager but I give absolutely the same result. (And take one more problem - couldn't load then on my general macOS, I could do it only with Cmnd+R mode and change startup disk).

I spend a lot of time and hope anybody could help me to solve this problem

My system report if it need:
iMacPro1,1
Intel Xeon W
Radeon Pro Vega 64
System Version: macOS 10.13.6 (17G65) (it's latest macOS High Sierra)
Kernel Version: Darwin 17.7.0

Sorry for my english, it's very fluency.
Thank you for your read time. Have a nice day.

[d.dragun]

So I go a little bit further by random clicking:
When I start up my machine with Alt key before I choose EFIBoot USB device, I connect wifi to my home network and give some more text before freezing.

Code: Select all

BCMDHD_ExitBootService: ENTER
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 0 succeeded
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 1 succeeded
DS-EXT timeout
dhd_msgbuf_set_ioctl(): dhd_fillup_ioct_reqst failed
wl_ioctl: dhd_wl_ioctl_cmd failed. cmd 52, ret -1, ifidx = 0
BCMDHD_JoinIoctl: error issuing disassoc !
BCMDHD_80211Ioctl JOIN failed

And it's again freeze.

[TrevorH]

The CentOS iso images are already UEFI enabled. Did you try jsut copying it direct to the USB stick without changing it at all?

[d.dragun]

I try it now but absolutely the same result

I used this command:

Code: Select all

diskutil unmountDisk /dev/disk3
sudo dd if=/Users/d.dragun/Downloads/CentOS-7-x86_64-Everything-1804.iso of=/dev/rdisk3

[d.dragun]

I try to install on my MacBook Pro from this USB and it start launch! But not on my iMac Pro and I don't understand why
MacBookPro
Intel Core i7
Intel Iris Plus Graphics 650
System Version: macOS 10.13.6 (17G65)
Kernel Version: Darwin 17.7.0

[j.a.duke]

I try to install on my MacBook Pro from this USB and it start launch! But not on my iMac Pro and I don't understand why
MacBookPro
Intel Core i7
Intel Iris Plus Graphics 650
System Version: macOS 10.13.6 (17G65)
Kernel Version: Darwin 17.7.0

Your iMac Pro has a “T2” chip inside of it that requires the OS booting the computer to be signed and verified before the system will boot. The MacBook Pro does not. As an aside, the newly released 2018 MacBook Pros incorporate a newer version of the T2 and are subject to the same constraints as the iMac Pro.

Here are some references:
Mac computers that have the Apple T2 chip
About Secure Boot

Hope this helps.

Cheers,
Jon

[d.dragun]

Thank you for your help.
Erlier I found this Startup Security Utility (on your second link) and change checkbox to “No Security” and “Allow booting from external media”. Without it when I choose EFIBoot there are just reboot and start macOS. After I chenged this preference CentOS installer opened but freeze whith message on top of this topic

[sbavi]

I have a similar problem with my 2019 iMac Pro. rEFInd doesnt work. Holding option key on startup does show EFI USB boot drive, on selecting it the screen freezes with below details:

BCMDHD_ExitBootService: ENTER
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 0 succeeded
dhd_os_wifi_platform_set_power: Setting wl_reg_on to 1 succeeded

Secure Boot: No Security
External Boot: Allow booting

Did anyone get through issue? I hope new iMac's with T2 chip allows installing Linux distro OS.

[rbmanian75]

try with kernel option noapic. It worked for me in ubuntu. You cant install linux in internal ssd because of the t2 chip. But you can install in external hdd. disable secure boot and enable boot from external devices in startup security.