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0001 <sect1 id="howto-installos">
0002         <title>How-To: Installing a New Operating System</title>
0003 
0004         <para>
0005                 This how-to describes the preparation of a new hard disk device for an OS installation: Suppose you bought a new hard disk and now intend to use it as a replacement for the old one that currently holds your OS and data partitions. You would also like to take this opportunity to install a new operating system. Several steps will have to be taken to make the transition from the old to the new system and drive.
0006         </para>
0007 
0008         <para>
0009                 In the following, <quote>/dev/sdb</quote> is the old hard disk and <quote>/dev/sdc</quote> is the new one. This screenshot shows the situation on the source device:
0010         </para>
0011 
0012         <para>
0013                 <screenshot>
0014                         <mediaobject>
0015                                 <imageobject><imagedata fileref="installos_howto_1.png" format="PNG"/></imageobject>
0016                                 <textobject><phrase>Main window with source device</phrase></textobject>
0017                         </mediaobject>
0018                 </screenshot>
0019         </para>
0020 
0021         <para>
0022                 The new device will look like this. Note that it doesn't yet have valid partition table, thus the first step to take is to create one by selecting <xref linkend="menu-device-createpartitiontable"/>:
0023         </para>
0024 
0025         <para>
0026                 <screenshot>
0027                         <mediaobject>
0028                                 <imageobject><imagedata fileref="installos_howto_2.png" format="PNG"/></imageobject>
0029                                 <textobject><phrase>Main window with destination device</phrase></textobject>
0030                         </mediaobject>
0031                 </screenshot>
0032         </para>
0033         
0034         <para>
0035                 After confirming the warning dialog you can begin creating partitions on the new device by clicking the extended partition and selecting <xref linkend="menu-partition-new"/>. Begin with an extended partition at the end of the device to later hold the home and swap partitions:
0036         </para>
0037 
0038         <para>
0039                 <screenshot>
0040                         <mediaobject>
0041                                 <imageobject><imagedata fileref="installos_howto_3.png" format="PNG"/></imageobject>
0042                                 <textobject><phrase>Creating an extended partition</phrase></textobject>
0043                         </mediaobject>
0044                 </screenshot>
0045         </para>
0046         
0047         <para>
0048                 Click <guibutton>OK</guibutton> and the operation to create this extended partition is added to the list.
0049         </para>
0050 
0051         <para>
0052                 Now create a primary partition on the rest of the device where the new OS will be installed. Make it as large as the unallocated area in front of the extended partition:
0053         </para>
0054 
0055         <para>
0056                 <screenshot>
0057                         <mediaobject>
0058                                 <imageobject><imagedata fileref="installos_howto_4.png" format="PNG"/></imageobject>
0059                                 <textobject><phrase>Creating a primary partition</phrase></textobject>
0060                         </mediaobject>
0061                 </screenshot>
0062         </para>
0063 
0064         <para>
0065                 Click <guibutton>OK</guibutton> in the dialog to accept your choice. The operation to create the new primary partition is then added to the operation list.
0066         </para>
0067         
0068         <para>
0069                 Now it is time to copy the home partition from the old device to the extended partition on the new device. Select the old device in the Device List panel, click on partition <quote>sdb5</quote> and pick <xref linkend="menu-partition-copy"/>.
0070         </para>
0071 
0072         <para>
0073                 Then go back to the new device and click the extended partition. Select <xref linkend="menu-partition-paste"/>. The following dialog will come up:
0074         </para>
0075         
0076         <para>
0077                 <screenshot>
0078                         <mediaobject>
0079                                 <imageobject><imagedata fileref="installos_howto_5.png" format="PNG"/></imageobject>
0080                                 <textobject><phrase>Pasting the home partition</phrase></textobject>
0081                         </mediaobject>
0082                 </screenshot>
0083         </para>
0084 
0085         <para>
0086                 This already looks mostly okay but you already know that you will not need that much free space after the home partition because you will later create a swap partition there.
0087         </para>
0088 
0089         <para>
0090                 So grab the right resize handle in the dialog's resizer widget and move it to the right until the free space after the pasted partition has a size more suitable for a swap partition: 
0091         </para>
0092 
0093         <para>
0094                 <screenshot>
0095                         <mediaobject>
0096                                 <imageobject><imagedata fileref="installos_howto_6.png" format="PNG"/></imageobject>
0097                                 <textobject><phrase>Resizing a pasted partition</phrase></textobject>
0098                         </mediaobject>
0099                 </screenshot>
0100         </para>
0101         
0102         <para>
0103                 This looks fine. Click <guibutton>OK</guibutton> to accept and close the dialog. A new operation to paste the copied partition to the extended partition on <quote>sdc</quote> is added to the operation list. Note that this operation will also set the new size.
0104         </para>
0105 
0106         <para>
0107                 Finally you will want to create a new swap partition at the end of the extended partition on <quote>sdc</quote>. There is no need to copy the existing swap partition from <quote>sdb</quote> because swap does not hold any permanent information worth keeping. Simply create a new partition with type linuxswap that fills the whole of the unallocated area after the new home partition.
0108         </para>
0109 
0110         <para>
0111                 The main window with all operations and the preview of how <quote>sdc</quote> will look like once they are applied now looks like this:
0112         </para>
0113         
0114         <para>
0115                 <screenshot>
0116                         <mediaobject>
0117                                 <imageobject><imagedata fileref="installos_howto_7.png" format="PNG"/></imageobject>
0118                                 <textobject><phrase>Main window after setting up all operations</phrase></textobject>
0119                         </mediaobject>
0120                 </screenshot>
0121         </para>
0122         
0123         <para>
0124                 This looks great so select <xref linkend="menu-edit-apply"/>, confirm the warning dialog and wait until the operations have all been executed. For details on executing operations see <link linkend="howto-resizepartition">the how-to on resizing partitions</link>.
0125         </para>
0126         
0127         <para>
0128                 Your new hard disk device is now ready for the installation of your new operating system.
0129         </para>
0130 
0131 </sect1>