site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I'm trying to work out what files have been corrupted to cause the error message at boot time: ...Mach-O file has bad magic number 0xfeedfacf Error loading kernel 'mach_kernel' (0x1) That's the message I get when booting from a newer MacBook Pro. On an older Mac Pro, there is an error message and a reboot so I am unable to read the error message as it flashes by. I do see the Mac Pro showing more than one row of dots as it is loading. (I've always assumed that each dot is a kext,) The corruption was caused by a disk driver that I am working on. I'd like to work out what the corruption is in order to diagnose the problem. Is there some way of determining which file has been corrupted? I replaced the mach_kernel file already so that's not it. I suspect that it's one of the kext. But I'm not sure how to determine if it is corrupted or which one is corrupted. I tried running "otool - h" on all of the files in MacOS directories, but they all seem to check out with a proper 0xfeedface. Is there some other options or some other tools that can help? Thanks for the help! ...Duane -----BEGIN PGP SIGNATURE----- Version: PGP Desktop 9.10.0 (Build 500) Charset: US-ASCII wsBVAwUBSrmjwkrg9acQ4r2CAQiWBgf+LYt8ulg+3/i4wYmjlv6C3FtYBSwsF0G1 LlugU+oW5iczHN69yci5iLh3MaVkictq2aLt7H6R0mWGtgCQlxE1QvKcXxzsuRlg 2J0ToWTap0EocWSvWpK46Xloay1OGWJic+Z10+maXmPV+IutivjXp9BSKwIRJnao FqR+8oZguaNloFshk+aIB4ln1J8dHvzkHJ75MrekS6gqDy20DrdASoP0WuC169ht AYR0pmhUIoCFY93lMDx2LHQieuqdZ+GH52o18jjXbdYJ68Epgvx7g51e2AvGuIU9 hpYqTDo784Hyw/86M/FtrLexYiWLZ5Gde/mDP4Hlk7zWDBpw3ROqvA== =uq2j -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com