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February 11, 2020 01:21
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netkas.org: Bringing back 32-bit apps to life
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| I have found out that 32-bit apps support in Catalina was disabled but not completely removed | |
| Current state is enough to run some console 32-bit apps in catalina | |
| to have it run this command: | |
| sudo nvram boot-args=”no32exec=0″ | |
| if one wants more, like gui app, need to use some libs from mojave probably. | |
| next is some output from console | |
| $ uname -a | |
| Darwin Macs-Mac-Pro.local 19.0.0 Darwin Kernel Version 19.0.0: Wed Sep 25 20:18:50 PDT 2019; root:xnu-6153.11.26~2/RELEASE_X86_64 x86_64 | |
| $ file EfiDecompress.macosx | |
| EfiDecompress.macosx: Mach-O executable i386 | |
| $ ./EfiDecompress.macosx | |
| EfiDecompress v1.1 -Efi File Decompress Utility | |
| Copyright (c) 2005-2006 Intel Corporation. All rights reserved. | |
| Usage: EfiDecompress Inputfile Outputfile | |
| $ otool -L EfiDecompress.macosx | |
| EfiDecompress.macosx: | |
| /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) | |
| /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.3) | |
| $ file /usr/lib/libSystem.B.dylib | |
| /usr/lib/libSystem.B.dylib: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit dynamically linked shared library x86_64] [i386:Mach-O dynamically linked shared library i386] | |
| /usr/lib/libSystem.B.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64 | |
| /usr/lib/libSystem.B.dylib (for architecture i386): Mach-O dynamically linked shared library i386 | |
| $ nvram boot-args | |
| boot-args no32exec=0 | |
| here is how one can try to run 32-bit gui app, can’t say it’s working very well | |
| DYLD_ROOT_PATH=/Volumes/Macintosh\ SSD/ ./CrossOver | |
| DYLD_ROOT_PATH should specify root volume for macos mojave |
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Hello !
This gist was copy / pasted from the internet wayback machine from an article that was deleted. I believe It was written for the first version of macOs that removed support for executing 32bits applications.I found the original article : http://netkas.org/?p=1491. I have to admit that I never took the time to try this procedure myself, unfortunatly.To resolve your problem, I think you need to download EfiDecompress.macosx, but I don't know where to find it.
Since this tool seems to mess with EFI things, I must add a disclaimer, it may break your macOS installation if use incorrectly.
Regards.