OpenCore BigSur USB boot stalls out — help interpreting verbose logging?

[T3o]

Hi everyone, I am writing this announcement about an answer from someone better than me in this field because I am a beginner.
OpenCore doesn't start up, I'm trying to install big sur but nothing to do doesn't even want to enter the menu where you choose which boot you want to start ...
If anyone wants to help me I would be really grateful I am trying to solve for 2 days ..
sorry my english ..


00:000 00:000 OC: OpenCore DBG-074-2021-10-04 is loading in Optional mode (0/0)...
00:055 00:055 OC: Boot timestamp - 2021.10.31 03:43:57
00:110 00:055 OCCPU: MP services threads 4 (enabled 4) - Success
00:228 00:118 OCCPU: MP services Pkg 1 Cores 4 Threads 1 - Success
00:283 00:055 OCCPU: Found Intel(R) Core(TM) i3-9100 CPU @ 3.60GHz
00:338 00:055 OCCPU: Signature 906EB Stepping B Model 9E Family 6 Type 0 ExtModel 9 ExtFamily 0 uCode D6 CPUID MAX (16/80000008)
00:393 00:055 OCCPU: EIST CFG Lock 0
00:449 00:055 OCCPU: TSC Adjust 0
00:504 00:055 OCCPU: Known Model Core Crystal Clock Frequency 24000000Hz
00:622 00:117 OCCPU: CPUFrequencyFromART 3600000000Hz 3600MHz = 24000000 * 300 / 2
00:677 00:055 OCCPU: Timer address is 1808 from PMC ACPI
00:732 00:054 OCCPU: Failed to get FSBFrequency data using Apple Platform Info - Not Found
00:889 00:157 OCCPU: Intel TSC: 3600000000Hz, 3600MHz; FSB: 100000000Hz, 100MHz; MaxBusRatio: 36
00:943 00:053 OCCPU: Detected Apple Processor Type: 09 -> 0905
00:998 00:055 OCCPU: CPUFrequencyFromTSC 3599994668Hz 3599MHz
01:116 00:118 OCCPU: CPUFrequency 3600000000Hz 3600MHz
01:171 00:055 OCCPU: FSBFrequency 100000000Hz 100MHz
01:227 00:055 OCCPU: Pkg 1 Cores 4 Threads 4
01:282 00:054 OC: OcLoadNvramSupport...
01:337 00:055 OC: Not deleting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:UIScale, matches add
01:392 00:055 OC: Not deleting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14efaultBackgroundColor, matches add
01:510 00:118 OC: Not deleting NVRAM 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:rtc-blacklist, matches add
01:566 00:055 OC: Not deleting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:boot-args, matches add
01:640 00:074 OC: Setting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14efaultBackgroundColor - ignored, exists
01:695 00:055 OC: Setting NVRAM 4D1EDE05-38C7-4A6A-9CC6-4BCCA8B38C14:UIScale - ignored, exists
01:752 00:056 OC: Setting NVRAM 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:rtc-blacklist - Not Found
01:807 00:055 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:SystemAudioVolume - ignored, exists
01:925 00:118 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:boot-args - ignored, exists
01:981 00:055 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:run-efi-updater - ignored, exists
02:036 00:055 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82:csr-active-config - ignored, exists
02:091 00:054 OC: Setting NVRAM 7C436110-AB2A-4BBB-A880-FE41995C9F82rev-lang:kbd - ignored, exists
02:146 00:055 OC: Current version is DBG-074-2021-10-04
02:202 00:056 OC: OcMiscMiddleInit...
02:320 00:117 OC: StorageHandle AE68C018 with Disabled LauncherOption pointing to Default
02:376 00:056 OC: OcLoadUefiSupport...
02:432 00:055 OCAE: Builtin installed
02:487 00:055 OCRTC: Wake log is 0x00 0x00 0 0x00
02:543 00:055 OC: Automatic SB model x86legacy from model iMac19,1
02:661 00:118 OC: Loading Apple Secure Boot with x86legacy (level 1)
02:716 00:055 OC: Discovered x86legacy with zero ECID, using system-id
02:771 00:055 OC: Grabbed SB uuid 00000000-0000-0000-0000-000000000000 from auto config - Unsupported
02:826 00:055 OC: Grabbed SB uuid 00000000-0000-0000-0000-000000000000 direct from NVRAM - Not Found
02:881 00:055 OC: Grabbed zero system-id for SB, this is not allowed

 

[T3o]

I know well that to start my rx 550 it will be a mess but I hope it is not the one to cause these errors