for mac instal Ultimate Windows Tweaker 5.1

One is a user that apparently has Tiger running in VB 5.1.10 on Sierra Tiger guest on Sierra host. At this point I searched the forums and discovered two possible leads. But the kernel panic I'm getting is the same as what I see with the Tiger VM. Since I already had working settings in the Leopard VM that I'd updated I just created a new VM with those same settings and attempted the install process. So, my next experiment was to try to create a Leopard VM from scratch using the installer disc. Seeing as the same two error messages that brought me to this solution also exist in the Tiger VM log I tried them there but no joy. These two commands were enough to get it past the kernel panic and running. Leopard in this case being the name of my VM. VBoxManage setextradata 'Leopard' 'VBoxInternal/CPUM/MSRs/MsrPmgCstConfigControl/First' 0x000000E2 VBoxManage setextradata 'Leopard' 'VBoxInternal/CPUM/MSRs/Ia32MiscEnables/First' 0x000001A0 For Leopard I was finally able to get it to run by using the following two commands in Terminal:

After futzing around with both of them for awhile I've managed to get Leopard to run but Tiger is putting up a fight. The devs have made some changes since then that have the side-effect of causing these VMs to both fail to boot with kernel panics. Up through VB 4.3.6 they ran without difficulty, see Status of OSX on OSX for details. They are OS X Tiger (10.4.11 - intel version) and OS X Leopard (10.5.8 ). Two of my guest virtual machines are giving me problems.

The host machine is an iMac i7 3.4 27-Inch (Mid-2011). I'm currently in the process for moving from OS X Snow Leopard (10.6.8 ) and VirtualBox 4.3.6 to OS X El Capitan (10.11.6) and VirtualBox 5.1.12.

For mac instal Ultimate Windows Tweaker 5.1