Re: Centos 7 shim fix failed

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At 05:01 PM 8/4/2020, you wrote:
Am 05.08.20 um 01:27 schrieb david:
At 04:18 PM 8/4/2020, you wrote:
Am 05.08.20 um 01:09 schrieb david:
At 01:54 PM 8/4/2020, you wrote:
On Tue, 04 Aug 2020 13:44:05 -0700
david wrote:

> After all the updates, the system was NOT bootable.

How long did you wait for it to boot, and what did it do when it failed to boot?� What text messages showed up on the console?� Any reported errors when you ran the update or when you rebooted the computer?� If so, what did the say?

I personally haven't had any issues updating any of my computers (using a mix of Centos 6, 7 and 8) but maybe they're all too old to for the issue to show up.

--
How long did I wait:�  5 minutes
What on the console:�  nothing, just a dull gray color
Errors on update:�  none
---------------------
But when I blocked the update, it booted within a minute, and ran.

Can you boot the system with all updates and secureboot=off?
(Just to be sure; I imply that you use UEFI, right?)

--
Leon
____________

I'm not sure how to turn 'secure boot' off or if it exists.
(MacMini5.2).  I presume it uses UEFI, but not sure how to answer that.

Oh, an apple device. AFAIK the openfirmware of such hardware have also a legacy mode. So first check if it uses the UEFI mode at all by checking
if this directory exists (in the working/bootable system):

# ls -la /sys/firmware/efi

if so test the secure boot state with

# mokutil --sb-state


Boot failure only occurs when the grub2/shim/mokutil updates are applied.



[root@xxx -]ls -la /sys/firmware/efi
total 0
drwxr-xr-x  5 root root    0 Aug  4 17:12 .
drwxr-xr-x  7 root root    0 Aug  4 14:30 ..
-r--r--r--  1 root root 4096 Aug  4 17:12 config_table
drwxr-xr-x  2 root root    0 Aug  4 14:30 efivars
-r--r--r--  1 root root 4096 Aug  4 17:12 fw_platform_size
-r--r--r--  1 root root 4096 Aug  4 17:12 fw_vendor
-r--r--r--  1 root root 4096 Aug  4 17:12 runtime
drwxr-xr-x 10 root root    0 Aug  4 17:12 runtime-map
-r--------  1 root root 4096 Aug  4 14:31 systab
drwxr-xr-x 23 root root    0 Aug  4 17:12 vars
[root@xxx ~]# mokutil --sb-state
This system doesn't support Secure Boot
[root@xxx ~]#



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