ACPI is the current industry standard to allow operating systems to recognize hardware, configure motherboards and other devices and manage power. In addition, you can turn off the Advanced Configuration and Power Interface (ACPI) which VirtualBox presents to the guest operating system by default. Turning it on after installation will have no effect however. As with ACPI, the I/O APIC therefore must not be turned off after installation of a Windows guest OS. Warning: All Windows operating systems starting with Windows 2000 install different kernels depending on whether an I/O APIC is available. Also, the use of an I/O APIC slightly increases the overhead of virtualization and therefore slows down the guest OS a little. However, software support for I/O APICs has been unreliable with some operating systems other than Windows. Note: Enabling the I/O APIC is required for 64-bit guest operating systems, especially Windows Vista it is also required if you want to use more than one virtual CPU in a virtual machine. With an I/O APIC, operating systems can use more than 16 interrupt requests (IRQs) and therefore avoid IRQ sharing for improved reliability. Is this the correct way to load the Windows ISO installer? What should I do next? Attachments Win7-14-18-23-EFI.txt With EFI (125.76 KiB) Downloaded 155 times Win7-14-09-20-No-EFI.txt No EFI (100.Here is the quote from VirtualBox documentation:Īdvanced Programmable Interrupt Controllers (APICs) are a newer x86 hardware feature that have replaced old-style Programmable Interrupt Controllers (PICs) in recent years. It indicates mapping table with BLK0 and BLK1, then a Shell prompt, and now I'm lost. I start the Virtual Machine again, and I get an UEFI Interactive Shell. I then go to the "Motherboard" tab, and see that the "Enable EFI" check box is unchecked, so I check that option. When I open the Virtual Machine settings, the "Acceleration" tab shows the "Enable VT-x/AMD-V" and "Enable Nested Paging" check boxes are checked. I browse to select the Windows 7 ISO file I just created.īut then a "FATAL: No bootable medium found! System halted." error message appears. When I run it for the first time, it asks me for the start-up disk. I've created the new Virtual Machine with the default settings: 2 GB RAM provided, 32 GB dynamic space for the VDI.
In order to install a 64-bit OS, I've enabled Virtualization in the BIOS. I want to install a Windows 7 Professional 64-bit guest in my VirtualBox.Īs the laptop doesn't come with an internal DVD drive, I created an ISO from the Win7 installation DVD, and stored it in my Documents folder. I have a Lenovo Y50-70 laptop with 16 GB RAM, 256 GB SSD running Windows 10 Home Edition 64-bit.
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