Start your PC from the stick

Open the boot menu

Plug the stick in, then switch the computer on while pressing its boot menu key. Keep tapping it until a menu appears.

Make	Key
Dell, Lenovo	F12
HP	F9, or Esc then F9
ASUS	F8
Acer	F12 or Esc
Intel Mac	Hold Option

Pick the entry for your USB stick that mentions UEFI. An older PC without UEFI shows just the stick, so pick that.

From Windows you can also hold Shift while you click Restart, then choose Use a device and pick the stick.

The Wild OS start menu

The Wild OS menu appears and, after 8 seconds, starts the first entry on its own.

Entry	What it does
Install Wild OS	Opens the installer straight away, with no desktop first.
Try Wild OS	Opens a full Wild OS desktop running from the stick. Nothing on your disk changes, and you can install from there too.
Check this USB stick	Checks every file on the stick against its checksum, then carries on into the trial desktop. Use it if anything seems odd.
Advanced	Safe graphics versions of Install and Try, start-up messages for diagnosing problems, and on UEFI PCs a shortcut to the firmware settings.

If the screen goes black or garbled after you pick an entry, restart and use Install with safe graphics or Try with safe graphics from Advanced.

Secure Boot

You can leave Secure Boot on. On UEFI PCs Wild OS starts with Secure Boot on, both from the stick and once installed.

If the stick doesn’t appear at all, see the USB stick won’t start.