2020-02-28 15:36:05 +00:00
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.. _direct_005flinux_005fboot:
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Direct Linux Boot
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-----------------
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This section explains how to launch a Linux kernel inside QEMU without
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having to make a full bootable image. It is very useful for fast Linux
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kernel testing.
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The syntax is:
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.. parsed-literal::
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|qemu_system| -kernel bzImage -hda rootdisk.img -append "root=/dev/hda"
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Use ``-kernel`` to provide the Linux kernel image and ``-append`` to
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give the kernel command line arguments. The ``-initrd`` option can be
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used to provide an INITRD image.
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If you do not need graphical output, you can disable it and redirect the
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virtual serial port and the QEMU monitor to the console with the
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``-nographic`` option. The typical command line is:
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.. parsed-literal::
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|qemu_system| -kernel bzImage -hda rootdisk.img \
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-append "root=/dev/hda console=ttyS0" -nographic
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Use Ctrl-a c to switch between the serial console and the monitor (see
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2023-05-12 15:43:38 +01:00
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:ref:`GUI_keys`).
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