Headless Ubuntu - Revision history

Admin: /* Installing the Modified Disk Image from USB */

2015-06-10T04:58:05Z

Installing the Modified Disk Image from USB

← Older revision		Revision as of 04:58, 10 June 2015
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	</pre>		</pre>

	=~~Installing~~ the ~~Modified~~ Disk Image ~~from~~ USB=		=Putting the Disk Image on a USB=

	The last step is to take the modified .iso image, put it on a thumbdrive, and make a no-questions-asked thumbdrive xubuntu.		The last step is to take the modified .iso image, put it on a thumbdrive, and make a no-questions-asked thumbdrive xubuntu.

Admin: /* Format the flashdrive with the iso */

2015-06-09T04:21:11Z

Format the flashdrive with the iso

← Older revision		Revision as of 04:21, 9 June 2015
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	You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.		You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.

	That command will take a while. When it is done, eject your media with the command:		That command will take a while, and the output will look something like this:

			<pre>
			$ sudo dd if=./my-xubuntu.img of=/dev/rdisk4 bs=1m
			969+1 records in
			969+1 records out
			1016520704 bytes transferred in 232.666302 secs (4369007 bytes/sec)
			</pre>

			When it is done, eject your media with the command:

	<pre>		<pre>

Admin: /* Format the flashdrive with the iso */

2015-06-09T04:18:06Z

Format the flashdrive with the iso

← Older revision		Revision as of 04:18, 9 June 2015
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	You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.		You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.

			That command will take a while. When it is done, eject your media with the command:

			<pre>
			diskutil eject /dev/disk6
			</pre>

	=DO IT!!!=		=DO IT!!!=

	Now you're ready to install your no-questions-asked xubuntu install on your headless server with nothin' but a usb stick.		Now you're ready to install your no-questions-asked xubuntu install on your headless server with nothin' but a usb stick.

Admin: /* Format the flashdrive with the iso */

2015-06-09T04:17:22Z

Format the flashdrive with the iso

← Older revision		Revision as of 04:17, 9 June 2015
Line 679:		Line 679:

	You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.		You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.

			=DO IT!!!=

			Now you're ready to install your no-questions-asked xubuntu install on your headless server with nothin' but a usb stick.

Admin: /* Modifying the Disk Image */

2015-06-09T04:16:12Z

Modifying the Disk Image

← Older revision		Revision as of 04:16, 9 June 2015
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	$ hdiutil makehybrid -iso -joliet -o my-xubuntu.iso my-xubuntu.cdr		$ hdiutil makehybrid -iso -joliet -o my-xubuntu.iso my-xubuntu.cdr
	</pre>		</pre>

			=Installing the Modified Disk Image from USB=

			The last step is to take the modified .iso image, put it on a thumbdrive, and make a no-questions-asked thumbdrive xubuntu.

			This is following [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx this tutorial].

			==Convert iso to img==

			First, we convert the iso file to an img file:

			<pre>
			$ hdiutil convert -format UDRW -o ./my-xubuntu.img ./my-xubuntu.iso
			$ mv my-xubuntu.img.dmg my-xubuntu.img
			</pre>

			==Mount your flashdrive device==

			Once you've inserted the flashdrive into the computer, you can run

			<pre>
			$ diskutil list
			</pre>

			and look for the device with the same size as your flash drive. This should be something like <code>/dev/disk6</code>.

			Unmount this disk using the command:

			<pre>
			$ diskutil unmountDisk /dev/disk6
			</pre>

			This command unmounts the disk, but it does not unmount the device. What we'll do next is reformat the device using our modified Xubuntu iso file.

			==Format the flashdrive with the iso==

			We can format our disk with the <code>dd</code> utility:

			<pre>
			$ sudo dd if=./my-xubuntu.img of=/dev/rdisk6 bs=1m
			</pre>

			You can use either <code>/dev/rdisk6</code> or <code>/dev/disk6</code>. [http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx This page] says rdisk is faster.

Admin: /* Creating a preseed file */

2015-06-09T04:07:27Z

Creating a preseed file

← Older revision		Revision as of 04:07, 9 June 2015
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	</pre>		</pre>
	}}		}}

			Alrighty. Now we're ready to make an iso for installing our customized, No-Questions-Asked Xubuntu.

			==Creating the modified iso image==

			Our first step was to download the hybrid iso from Xubuntu.

			Our second step was to extract the hybrid iso into a new iso that could be read by Mac.

			Our third step was to modify the iso image.

			Now we turn those modified files into an iso file using Disk Utility and hdiutil.

			Create a burnable CD-R image from the folder containing the modified iso. Do this by opening Disk Utility and clicking File > New > Disk Image from Folder. Then select the folder with the iso contents.

			This will create a .cdr image. This is the intermediate file.

			To turn this intermediate .cdr image into an .iso file, use hdiutil. From the directory containing the .cdr file, execute the command:

			<pre>
			$ hdiutil makehybrid -iso -joliet -o my-xubuntu.iso my-xubuntu.cdr
			</pre>

Admin: /* Creating a preseed */

2015-06-09T03:50:48Z

Creating a preseed

← Older revision		Revision as of 03:50, 9 June 2015
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	</pre>		</pre>

	==Creating a preseed==		==Creating a preseed file==

	Now create a preseed file, which allows you to automatically answer questions during the installation process, by copying the existing preseed file and modifying it. From the root of the Ubuntu disk image contents:		Now create a preseed file, which allows you to automatically answer questions during the installation process, by copying the existing preseed file and modifying it. From the root of the Ubuntu disk image contents:
Line 128:		Line 128:
	to get the final preseed file:		to get the final preseed file:

	{{Scroll box\|~~contents=~~		{{Scroll box\|
	<pre>		<pre>
	#### Contents of the preconfiguration file (for squeeze)		#### Contents of the preconfiguration file (for squeeze)

Admin: /* Creating a preseed */

2015-06-09T03:50:28Z

Creating a preseed

← Older revision		Revision as of 03:50, 9 June 2015
Line 128:		Line 128:
	to get the final preseed file:		to get the final preseed file:

	{{~~Scrollbox~~\|contents=		{{Scroll box\|contents=
	<pre>		<pre>
	#### Contents of the preconfiguration file (for squeeze)		#### Contents of the preconfiguration file (for squeeze)

Admin: /* Modifying the iso contents */

2015-06-09T03:48:56Z

Modifying the iso contents

Show changes

Admin: /* Modifying the iso contents */

2015-06-09T03:26:44Z

Modifying the iso contents

← Older revision		Revision as of 03:26, 9 June 2015
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	We now modify the iso contents to make the installation CD install xubuntu by default (following instructions from [http://askubuntu.com/questions/409607/how-to-create-a-customized-ubuntu-server-iso here]):		We now modify the iso contents to make the installation CD install xubuntu by default (following instructions from [http://askubuntu.com/questions/409607/how-to-create-a-customized-ubuntu-server-iso here]):

			The file <code>isolinux/txt.cfg</code> contains the menu items that show up on boot. The file looks like this:

			<pre>
			default live
			label live
			menu label ^Try Xubuntu without installing
			kernel /casper/vmlinuz
			append file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash ---
			label live-install
			menu label ^Install Xubuntu
			kernel /casper/vmlinuz
			append file=/cdrom/preseed/xubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash ---
			label check
			menu label ^Check disc for defects
			kernel /casper/vmlinuz
			append boot=casper integrity-check initrd=/casper/initrd.lz quiet splash ---
			label memtest
			menu label Test ^memory
			kernel /install/mt86plus
			label hd
			menu label ^Boot from first hard disk
			localboot 0x80
			</pre>

			These are modified to create a new menu item and make it the default:

			<pre>
			default quiet-install
			label quiet-install
			menu label ^Install Xubuntu
			kernel /casper/vmlinuz
			append file=/cdrom/preseed/xubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash ---
			label live
			menu label ^Try Xubuntu without installing
			kernel /casper/vmlinuz
			append file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash ---
			label live-install
			menu label ^Install Xubuntu
			kernel /casper/vmlinuz
			append file=/cdrom/preseed/xubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash ---
			label check
			menu label ^Check disc for defects
			kernel /casper/vmlinuz
			append boot=casper integrity-check initrd=/casper/initrd.lz quiet splash ---
			label memtest
			menu label Test ^memory
			kernel /install/mt86plus
			label hd
			menu label ^Boot from first hard disk
			localboot 0x80
			</pre>