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| <section id="overview"> |
| <h1>USB Boot: Undoable Stack Boot</h1> |
| <p>Boot DevStack from a USB disk into a RAM disk.</p> |
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| <section id="requirements"> |
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| <h2>Prerequisites</h2> |
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| <h3>Hardware</h3> |
| <p>This guide covers the creation of a bootable USB drive. Your |
| computer BIOS must support booting from USB and You will want at least 3GB of |
| RAM. You also will need a USB drive of at least 2GB.</p> |
| |
| <h3>Software</h3> |
| <p>Ubuntu 11.10 (Oneiric Ocelot) is required on host to create images.</p> |
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| <h2>Installation <small>bit blasting</small></h2> |
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| <h3>Set Up USB Drive</h3> |
| <ul> |
| <li>Insert the USB drive into the computer. Make a note of the device name, such as |
| <code>sdb</code>. Do not mount the device.</li> |
| <li>Install the boot system: |
| <pre>tools/build_usb_boot.sh /dev/sdb1</pre> |
| <p>This calls tools/build_ramdisk.sh to create a 2GB ramdisk |
| containing a complete development Oneiric OS plus the |
| OpenStack code checkouts. It then writes a syslinux boot sector |
| to the specified device and creates <code>/syslinux</code>.</p> |
| </li> |
| <li>If desired, you may now mount the device: |
| <pre>mount /dev/sdb1 /mnt/tmp |
| # foo |
| umount /mnt/tmp</pre> |
| </li> |
| </ul> |
| |
| <p>Now <a href="ramdisk.html">return</a> to the RAM disk Guide to kick |
| off your DevStack experience.</p> |
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