uemulatorx86_64 in your browser

Stopped

The machine is running. Stop it to change these settings.

Start from

Presets set the options below; nothing is downloaded until you press Start.

Drives

Read on demand, never downloaded whole; URLs need range requests. A CD is read-only. A disk keeps the guest's writes in memory until the machine stops. Drives are vda, vdb, … in this order, and UEFI boots the first one with a boot loader. Drop files anywhere to add them.

Linux kernel optional

Hypervisor arguments

Boot to a shellAdds rdinit=/bin/sh: the initramfs's busybox shell instead of its init. Extra kernel arguments

Firmware

UEFI BIOS Direct Custom

Hardware

Memory vCPUs

Display

Terminal Screen Both

Console

hvc0 (virtio) ttyS0 (serial)

Keyboard and mousevirtio keyboard and tablet, fed from the Screen view.

Advanced

JITCompile hot code to WebAssembly, about 9x faster than interpreting. ACPII/O APIC, HPET and power-off. Needed for several vCPUs and the IOMMU. AMD IOMMUDMA and interrupt remapping (IVRS); the guest kernel needs AMD_IOMMU. virtio-rngEntropy from crypto.getRandomValues. Restart on guest resetOff ends the run at a reset, which also stops a panicking kernel from rebooting forever. Replace the default command linePass only the extra arguments, not the library's console and panic defaults.

Run a PC in this tab

Boot an installer or live CD, a disk image or a Linux kernel on an emulated x86_64 machine. Nothing leaves your browser.

Drop an ISO, a disk image or a kernel here

Drop to attach: ISOs as CDs, other images as disks, a bzImage as the kernel