Implement legacy OS booting support #482
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This feature exists in rEFInd. I'm glad to see it coming to OpenCore. It involves writing to the MBR to change the active partition. This assumes the boot code in the MBR supports the MBR partition table semantics but I don't know of a case where an MBR wouldn't have a partition table. |
USB emulation mode should only be disabled for regular OpenDuet build, and not BlockIoDxe one.
| @@ -714,12 +714,25 @@ InternalAddBootEntryFromCustomEntry ( | |||
| DEBUG_INFO, | |||
| "OCB: Adding custom entry %s (%a|B:%d) -> %a\n", | |||
| BootEntry->Name, | |||
| CustomEntry->SystemAction != NULL ? "action" : (CustomEntry->Tool ? "tool" : "os"), | |||
| CustomEntry->ExternalSystemAction != NULL ? "ext-action" : (CustomEntry->SystemAction != NULL ? "action" : (CustomEntry->Tool ? "tool" : "os")), | |||
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Does this need icon update in OcBinaryData?
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Flavor still needs to be set like for SystemAction, currently OC_FLAVOUR_WINDOWS is used for all entries at the moment. Shouldn't need any icon updates.
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This looks architecturally right to me. Let's get it merged in the September release, cc @mhaeuser |
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In my opinion, this is ready. @Goldfish64, can you merge it please? |
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I have just tested it. The Windows (Legacy) logo appears in the bootlicker, but it can't boot. It boots fine through the Apple BootPicker menu. |
Adds support for booting of legacy OSes such as older versions of Windows or situations where legacy Windows must be used for proper functionality of hardware. Scope includes both Macs (via legacy interface) and OpenDuet on PC systems.
Closes acidanthera/bugtracker#912.
Mac
PC
Make USB be in usable state for real mode (transition ownership back to BIOS)Use BlockIo build of DUETPC and Mac