site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=simple/simple; d=cs.duke.edu; s=mail; t=1286887396; bh=EQYKp9W0raHejVofgOPa+Te3yNyGK4rUneZlgVy9gNI=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=hPry5BynmXcukO9acvt0p+9y5Gr8zVESUqNVLA05dHVkIuC0ZLwj0XMFcmxnjhugQ TYdozXmgygNWuY9UDRh6vf6vH2DDo5lNLo087kvoqqJqIRrolt/qLi0nNGiplAzdqj V/4LRzXW9LkOS7pEj2vQVjlibCysjQ9oL3pzlcKI= User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100920 Thunderbird/3.1.4 Hi All, We have a Mac Pro Dual Core Intel Xeon 2,66Ghz machine (Model Number: MacPro1,1) This model cannot boot the 64-bit kernel and the hardware design only allowed use of a 32-bit kernel. It has nothing to do with hardware design. Those machines run 64-bit kernels just fine. It is just due to Apple deciding it wasn't worth the effort to backport 64-bit EFI support to a machine they no longer sell or support. some Macs with 64-bit processors won’t be able to load the 64-bit kernel because they have a 32-bit EFI. Is it possible to load 64-bit EFI in my machine , if it's possible can any one explain it . Yes, but not in any Apple supported way. What I did to test my PCIe driver on a 64-bit kernel was to use the hackintosh "pc-efi-v10" bootloader. I use grub on a linux partition to launch the bootloader. Its all very Rube-Goldberg-ish, and it has all the disadvantages of a a "hackintosh" (no decent video support, etc). But for what I need (testing 64-bit driver) it works well enough. I did it quite a long time ago (when Snow Leopard was first released), so I'm fuzzy on all the details. Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... On 10/12/10 00:28, kiran kumar wrote: This email sent to site_archiver@lists.apple.com