macOS 26 Tahoe

[SkyrilHD]

Got macOS Tahoe to boot. Performance is horrible compared to Sequoia. Even the Dock does not show up. After a restart, I am unable to boot to macOS Tahoe (due to no acceleration?).

Compared to EFI v6.1, a modified version of USBMap needs to be used, else it will not boot and get stuck at the prohibited sign.

Here is the modified USBMap: USBMap-Tahoe.kext.zip

For config.plist changes, just set a limit for the current USBMap to Sequoia and set the MinKernel of the modified USBMap to Tahoe.

diff --git a/OpenCore/EFI/OC/config.plist b/OpenCore/EFI/OC/config.plist
index 96d5a4d..7069206 100755
--- a/OpenCore/EFI/OC/config.plist
+++ b/OpenCore/EFI/OC/config.plist
@@ -646,12 +646,30 @@
 				<key>ExecutablePath</key>
 				<string></string>
 				<key>MaxKernel</key>
-				<string></string>
+				<string>24.99.99</string>
 				<key>MinKernel</key>
 				<string></string>
 				<key>PlistPath</key>
 				<string>Contents/Info.plist</string>
 			</dict>
+			<dict>
+				<key>Arch</key>
+				<string>Any</string>
+				<key>BundlePath</key>
+				<string>USBMap-Tahoe.kext</string>
+				<key>Comment</key>
+				<string>USBMap-Tahoe.kext</string>
+				<key>Enabled</key>
+				<true/>
+				<key>ExecutablePath</key>
+				<string></string>
+				<key>MaxKernel</key>
+				<string></string>
+				<key>MinKernel</key>
+				<string>25.0.0</string>
+				<key>PlistPath</key>
+				<string>Contents/Info.plist</string>
+			</dict>
 			<dict>
 				<key>Arch</key>
 				<string>x86_64</string>