How to Troubleshoot stuck on EXITBS:START. on macOS
Hardware acceleration issues, black screen glitches, or improper SMBIOS settings can be resolved through precise OpenCore patch tuning and kext alignment.
Step-by-Step Resolution Guide
- Verify SMBIOS Alignment: Match your SMBIOS product name to the closest official Mac hardware generation.
- Check Graphics Acceleration: Confirm Metal support in System Information and update WhateverGreen/NootedRed.
- Re-apply OCLP Root Patches: On unsupported hardware, re-run OpenCore Legacy Patcher post-install patches.
- Audit OpenCore Config: Keep Lilu, VirtualSMC, and hardware kexts updated to the latest release binaries.
Copyable Diagnostic & Repair Commands
1. Clear Kext Cache & Rebuild System Caches:
sudo kextcache -i /2. Check GPU Acceleration & Metal Status:
system_profiler SPDisplaysDataType | grep -i metalVerification Checklist
- The system boots consistently without unexpected verbose halts.
- Target hardware components (Graphics, Audio, Wi-Fi/Bluetooth, NVMe) display correctly in System Information.
- No kernel panic logs appear during sleep, wake, or full reboot.
- A clean backup of the functional EFI directory is saved on external storage.
Rollback Protocol
- Boot from your secondary emergency FAT32 USB containing the original working EFI.
- Reset NVRAM from the OpenCore picker to flush temporary boot argument modifications.
- Restore system state using Time Machine if core macOS system binaries were modified.
Original Reddit Discussion:
Originally posted on r/hackintosh:
SO it's my first time hackintoshing, and i'm stuck in an error. but before i get to that part, let me provide some info about my build.
so i use OpenCore as the bootloader (i think it's the most common choice) and my hardware is
cpu: intel core i3-9100f.
ram: 4gb.
gpu: nvidia geforce gt710 (gk208) and the macOS version i'd like to install is big sur.
i used OpenCore's macrecovery to download the image, but i didn't use a plist editor. i used python scripts importing plistlib to edit the config.plist file.
also, i used a c:\hackintosh folder to commit changes to the file so i make sure it passes ocvalidate's tests, and when it does, i copy it to e:\EFI\OC\config.plist (where e is my usb drive)
and here's my log.
00:000 00:000 AAPL: #[EB.H.IS|!] Err(0xE) <- RT.GV boot-signature 7C436110-AB2A-4BBB-A880-FE41995C9F82
00:030 00:030 AAPL: #[EB.H.IS|!] Err(0xE) <- RT.GV boot-image-key 7C436110-AB2A-4BBB-A880-FE41995C9F82
00:055 00:025 AAPL: #[EB|H:IS] 0
00:081 00:025 AAPL: #[EB|LOG:INIT] 2026-08-08T18:25:47
00:149 00:068 AAPL: #[EB|VERSION] <"bootbase.efi 495.140.2~17 (Official), built 2021-08-30T07:02:12-0700">
00:174 00:025 AAPL: #[EB|BUILD] <"BUILD-INFO[308]:{"DisplayName":"bootbase.efi","DisplayVersion":"495.140.2~17","RecordUuid":"6B6B10D3-E712-4F5D-9988-B4A9386C79CF","BuildTime":"2021-08-30T07:02:12-0700","ProjectName":"efiboot","ProductName":"bootbase.efi","SourceVersion":"495.140.2","BuildVersion":"17","BuildConfiguration":"Release","BuildType":"Official"}">
00:199 00:025 AAPL: #[EB.CFG.DEV|!] Err(0xE) <- RT.GV booter-strict-xmlparser 7C436110-AB2A-4BBB-A880-FE41995C9F82
00:225 00:025 AAPL: #[EB|CFG:DEV] r5 0x0 0x0
00:250 00:025 AAPL: #[EB|H:IS] 0
00:275 00:025 AAPL: #[EB|WL:MODE] 0
00:300 00:025 AAPL: #[EB|CFG:ARG] boot-save-log 0x0000000000000002 (0x0000000000000002 < 0xFFFFFFFFFFFFFFFF) default
00:334 00:033 AAPL: #[EB|CFG:ARG] wake-save-log 0x0000000000000002 (0x0000000000000002 < 0x0000000000000002) default
00:359 00:025 AAPL: #[EB|CFG:ARG] console 0x0000000000000001 (0x0000000000000001 < 0x0000000000000001) default
00:384 00:025 AAPL: #[EB|CFG:ARG] serial 0x0000000000000001 (0x0000000000000001 < 0x0000000000000000) default
00:410 00:025 AAPL: #[EB|CFG:ARG] embed-log-dt 0x0000000000000000 (0x0000000000000000 < 0x0000000000000000) default
00:454 00:044 AAPL: #[EB|CFG:ARG] timestamps 0x0000000000000000 (0x0000000000000000 < 0xFFFFFFFFFFFFFFFF) default
00:480 00:025 AAPL: #[EB|CFG:ARG] log-level 0x0000000000000001 (0x0000000000000001 & 0x0000000000000021) default
00:514 00:034 AAPL: #[EB|CFG:ARG] breakpoint 0x0000000000000000 (0x0000000000000000 & 0x0000000000000000) default
00:540 00:025 AAPL: #[EB|CFG:ARG] kc-read-size 0x0000000000100000 (0x0000000000100000 < 0xFFFFFFFFFFFFFFFF) default
00:565 00:025 AAPL: #[EB|H:IS] 0
00:610 00:044 AAPL: #[EB|WL] 0 0 0x01 0x01 0 0x00
00:636 00:025 AAPL: #[EB|BRD:NV] Mac-AA95B1DDAB278B95
00:661 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 2 0x00
00:695 00:033 AAPL: #[EB.BST.IDT|+]
00:720 00:025 AAPL: #[EB|BM] X86LEGACYAP
00:746 00:026 AAPL: #[EB.BST.IDT|-]
00:771 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 3 0x00
00:797 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 4 0x00
00:822 00:025 AAPL: #[EB|BRD:NV] Mac-AA95B1DDAB278B95
00:847 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 5 0x00
00:881 00:033 AAPL: #[EB.H.CHK|BM] 0x0000000000000000
00:906 00:025 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.GV boot-signature 7C436110-AB2A-4BBB-A880-FE41995C9F82
00:931 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 23 0x0E
00:957 00:025 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.GV boot-image-key 7C436110-AB2A-4BBB-A880-FE41995C9F82
00:982 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 24 0x0E
01:007 00:025 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.GV boot-image 7C436110-AB2A-4BBB-A880-FE41995C9F82
01:059 00:051 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.SV- boot-signature 7C436110-AB2A-4BBB-A880-FE41995C9F82
01:084 00:025 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.SV- boot-image-key 7C436110-AB2A-4BBB-A880-FE41995C9F82
01:110 00:025 AAPL: #[EB.H.LV|!] Err(0xE) <- RT.SV- boot-image 7C436110-AB2A-4BBB-A880-FE41995C9F82
01:135 00:025 AAPL: #[EB|H:NOT]
01:161 00:025 AAPL: #[EB|SB:P] 0x0
01:186 00:025 AAPL: #[EB|LIMG:DP] VenMedia(957932CC-7E8E-433B-8F41-D391EA3C10F8)/MemMap(10:100000000-100001000)/DMG_0000000027D33787.dmg/VenMedia(004B07E8-0B9C-427E-B0D4-A466E6E57A62)/HD(Part1,Sig3704F11C-3C6D-4F16-B59C-C5409190D8E5)
01:211 00:025 AAPL: #[EB|LIMG:FP] \System\Library\CoreServices\boot.efi
01:246 00:034 AAPL: #[EB|LIMG:OPT]
01:271 00:025 AAPL: #[EB.B.OBV|BM:+DMG]
01:297 00:025 AAPL: #[EB.B.OBV|BM:+ROS]
01:325 00:028 AAPL: #[EB|RPS] 0 0 0
01:370 00:044 AAPL: #[EB.OPT.LXF|F] <"\\System\\Library\\CoreServices\\com.apple.Boot.plist">
01:396 00:025 AAPL: #[EB.LD.LF|IN] 0 1 <"\\System\\Library\\CoreServices\\com.apple.Boot.plist"> <"0">
01:431 00:035 AAPL: #[EB.LD.OFS|OPEN!] Err(0xE) <"\\System\\Library\\CoreServices\\com.apple.Boot.plist">
01:457 00:025 AAPL: #[EB.OPT.LXF|LF!] Err(0xE)
01:482 00:025 AAPL: #[EB.OPT.LXF|F] <"Library\\Preferences\\SystemConfiguration\\com.apple.Boot.plist">
01:526 00:044 AAPL: #[EB.LD.LF|IN] 0 1 <"Library\\Preferences\\SystemConfiguration\\com.apple.Boot.plist"> <"0">
01:566 00:039 AAPL: #[EB|KF] <"">
01:592 00:025 AAPL: #[EB|MBA:CL] <"">
01:625 00:033 AAPL: #[EB|MBA:NV] <"-v keepsyms=1 debug=0x100 -dbgenhdbg">
01:650 00:025 AAPL: #[EB|MBA:KF] <"">
01:675 00:025 AAPL: #[EB|MBA:OUT] <"-v keepsyms=1 debug=0x100 -dbgenhdbg">
01:701 00:025 AAPL: #[EB|LOG:VERBOSE] 2026-08-08T18:25:48
01:726 00:025 AAPL: #[EB|OPT:BM] 0x821082
01:751 00:025 AAPL: #[EB.OPT.LXF|F] <"\\System\\Library\\CoreServices\\PlatformSupport.plist">
01:776 00:025 AAPL: #[EB.LD.LF|IN] 0 1 <"\\System\\Library\\CoreServices\\PlatformSupport.plist"> <"0">
01:815 00:038 AAPL: #[EB|B:VAw]
01:840 00:025 AAPL: #[EB.B.MN|BM:ROS]
01:865 00:025 AAPL: #[EB|WL] 0 0 0x01 0x01 19 0x0E
01:891 00:025 AAPL: #[EB.CS.CSKSD|+]
01:916 00:025 AAPL: #[EB.G.CS|-?] Ok(0)
01:942 00:025 AAPL: #[EB.LD.LF|IN] 0 1 <"<null string>"> <"1">
02:653 00:711 AAPL: #[EB.B.SBS|SZ] 739896
02:685 00:031 AAPL: #[EB|B:SHA] <bc0a873db6d0ea0e3c53e8e613a8cc781a5d3cfe>
02:710 00:025 AAPL: #[EB.WL.PWLFNV|!] Err(0xE) <- RT.GV wake-failure 7C436110-AB2A-4BBB-A880-FE41995C9F82
02:736 00:025 AAPL: #[EB.WL.DT|!] Err(0xE) <- EB.WL.PWLFNV
02:761 00:025 AAPL: #[EB|WL:DT] 0x03010204
02:787 00:025 AAPL: #[EB.LD.LKC|R.1] <"System\Library\KernelCollections\BootKernelExtensions.kc">
113:903 111:116 AAPL: #[EB.LD.LKFS|-?] Ok(0)
113:942 00:039 AAPL: #[EB.LD.LKC|-?] Ok(0)
113:969 00:026 AAPL: #[EB|FWFM] 0x00000008FFDFFF7F
113:994 00:025 AAPL: #[EB|FWFT] 0x00000008FD8FF576
114:019 00:025 AAPL: #[EB|BST:REV1]
114:065 00:045 AAPL: #[EB|CSR:IN] 0x00000040
114:090 00:025 AAPL: #[EB|CSR:OUT] 0x00000040
114:125 00:034 AAPL: #[EB.BST.FBS|+]
114:151 00:025 AAPL: #[EB.BST.FBS|ADSZ] 0
114:176 00:025 AAPL: #[EB.BST.FBS|KSSZ] 0
114:221 00:045 AAPL: #[EB|SB:SBGMFNS] x86legacyap.im4m
114:247 00:025 AAPL: #[EB|RH:PF] usr\standalone\OS.dmg.root_hash
114:272 00:025 AAPL: #[EB|RH:MF] <"usr\\standalone\\OS.dmg.root_hash.x86legacyap.im4m">
114:306 00:033 AAPL: #[EB.LD.LF|IN] 0 1 <"usr\\standalone\\OS.dmg.root_hash"> <"0">
114:334 00:028 AAPL: #[EB.LD.OFS|OPEN!] Err(0xE) <"usr\\standalone\\OS.dmg.root_hash">
114:360 00:025 AAPL: #[EB.RH.LRH|P!] Err(0xE) <- EB.LD.LF
114:385 00:025 AAPL: #[EB.BST.FBS|!] Err(0xE) <- EB.RH.LRH
114:411 00:025 AAPL: #[EB.B.WFDW|!WF] Err(0xE) 0
114:436 00:025 AAPL: #[EB|LOG:DT] 2026-08-08T18:27:41
114:462 00:025 AAPL: #[EB|LOG:EXITBS:START] 2026-08-08T18:27:41
[link] [comments]
For more detailed configuration walkthroughs, explore the latest guides and tutorials on iATKOS.
Post a Comment