Operating Systems > macOS

Snow Leopard Pricing Scheme

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davidnix71:
There are hardware checks. If you have a PPC if Apple doesn't compile a Snow Leo in ppc code, then it won't run period.

If you install any Apple OS, it checks for a proprietary chipset/rom. Thats what hacking the developer versions of Tiger and Leo were all about. Those would install on a regular PC for testing. The final product wouldn't.

There is a Russian company that sells an illegally modded non-Apple peecees. The US company that sold usb dongles to bypass the TPM check was sued out of existence several times. :| :| :|

If you want to install Apple Tiger or Leo on an Apple Intel, the hard drive must be formatted first "GUID." If you have any other format, you must first zero the drive because the Apple format utility can't reformat into GUID unless you do. Then you cross your fingers and hope it works. GUID uses the last sectors of the hard drive for the MBR, which violates some drive maker's bios rules.
The illegal MBR of GUID allows dual booting Windows by prevent Windows from tampering with the Apple MBR.

All Apple OS's even back into 7 checked ram, hard drive and cpu's. OS 8 didn't require a PPC, 8.5 did. Past 9.1 you are supposed to have builtin USB. Classic (pre-OSX) won't boot from machines after the PowerMac G4 MDD (2003), it must be run under OSX as a guest OS (supplied with OSX). There is no Classic support in Leo or G5 Mac for any Intel Mac. The G5 is a PPC but unlike the G4 can't switch big/little indian states on the fly so there is a different version of Virtual PC for the G5.

The Leo installer looks for at least G4 and 866MHz cpu. If you hack the installer to bypass the check, it won't update because the "package receipts" list is corrupt or missing. BUT you can install Leo on a firewire drive from a G3 by making a dmg of the install disc on the G3, boot from the original disc and then install it on the fw drive. I've actually seen it working on a G3 900 MHz iBook. There is also a program hack called XPostFacto that allows OSX installs on unsupported machines.

worker201:

--- Quote from: davidnix71 on 11 June 2009, 06:40 ---If you want to install Apple Tiger or Leo on an Apple Intel, the hard drive must be formatted first "GUID." If you have any other format, you must first zero the drive because the Apple format utility can't reformat into GUID unless you do. Then you cross your fingers and hope it works. GUID uses the last sectors of the hard drive for the MBR, which violates some drive maker's bios rules.
The illegal MBR of GUID allows dual booting Windows by prevent Windows from tampering with the Apple MBR.
--- End quote ---

More about the GUID Partition Table:
http://en.wikipedia.org/wiki/GUID_Partition_Table

You make it sound like a bad idea, but I actually think the inclusion of a phony MBR and a built-in GUID are clever ideas.

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