{nav icon=home, name=Main Page > icon=cogs, name=Installation Guide > PureOS boot prompt} PureOS boot prompt options --- = PureOS boot options = If you start boot into PureOS live system, you will get to its boot options menu first: {F119185, size=full, alt=boot prompt options} Closer look: {F119188, size=full, alt=boot prompt options closer} == Boot options == Available options are: 1. **Test or install PureOS** > starts live PureOS instance from where you can perform [[Installation Guide/Live system installation|installation using Calamares installer]] 2. **Test or install PureOS (failsafe)** > starts live PureOS instance with safe boot options 3. **Advanced Options** > //hardware detection tool// and //memtest// (memory testing tool) By pressing {key ENTER} as soon the screen appears, you will boot the default (first) option. = Troubleshooting = If you boot into your USB drive but the boot fails or PureOS boot screen does not appear, you might try the following: 1. Disable secure boot/UEFI boot on your computer's BIOS and try again 2. Make sure you followed [[Recommendations/burn-using-etcher | the procedure to create a bootable USB drive]] 3. ISO image you burned to your USB might not be downloaded correctly, ensure the download is okay by [[ https://tracker.pureos.net/w/recommendations/download-pureos/ | verifying its sha256 checksum ]]