{nav icon=home, name=Main Page > icon=cogs, name=Installation Guide > Live system installation} Guide through the process of installing PureOS from live instance --- NOTE: This guide assumes that you have booted to live PureOS instance. = Pre-installation steps = * Start the live PureOS instance from a USB you have [[ Recommendations/#preparing-to-install | prepared]]. * Choose option 1 (//Start live PureOS//) at the PureOS [[Installation Guide/Boot prompt | boot prompt]] and wait for the GNOME desktop to fully start. * When GNOME desktop is started, finish the [[Installation Guide/PureOS Initial Setup | PureOS Initial Setup procedure]]. * Follow the steps below: = Simple installation = 1. Start the Calamares installer: {F20416, alt=PureOS live instance 1, size=full} 2. Ensure that you are connected to the power supply and the internet, and click !!Next!!: {F20418, alt=Calamares install 2, size=full} 3. Choose your time zone, set the system language and number and date locale: {F20420, alt=Calamares install 3, size=full} 4. Select your keyboard layout: {F20422, alt=Calamares install 4, size=full} 5. Disk partitioning. Assumed is that your disk is blank. Choose automatic partitioning (**//Erase disk//** option), the installer will automatically partition your disk. Type-in the password you wish to use for the **full disk encryption**. Leave it out if you do NOT want disk encryption: {F20532, alt=Calamares install 5, size=full} NOTE: Make sure to select proper device to install to! See the options encircled in red. Ignore if you only have one disk installed. {F202820, alt=Calamares install 5_note, size=full} 6. Create a user: {F20444, alt=Calamares install 6, size=full} 7. Review install instructions: {F20446, alt=Calamares install 7, size=full} 8. ...and confirm the installation: {F20448, alt=Calamares install 8, size=full} 9. Wait for few minutes: {F20450, alt=Calamares install 9, size=full} 10. And restart after it is done. {F20452, alt=Calamares install 10, size=full} = Advanced installation = Follow steps **1**-**4** from //Simple install//. 5. Select **//Manual partitioning//**: {F20424, alt=Calamares install 5_adv, size=full} 5a. First, click !!New Partition Table!! to create new partition table: {F20426, alt=Calamares install 5a, size=full} 5b. ...and select GPT (click !!OK!! to accept): {F20428, alt=Calamares install 5b, size=full} 5c. Now click on free space and click !!Create!! to create first partition: {F20430, alt=Calamares install 5c, size=full} 5d. Since we used GPT partition table, we need to create a partition with special flag. It can be of minimum size, so set the 1 MB size (installer might increase this value to something like 8 MB, ignore this), set File System to //unformatted// and select **bios-grub** flag (this is important). Click !!OK!! afterwards: {F20432, alt=Calamares install 5d, size=full} 5e. Click on **//Free Space//** and then the !!Create!! to create next partition: {F20434, alt=Calamares install 5e, size=full} 5f. In this example, swap partition is created next. Swap is needed for proper hibernation, and since the system has 8 GB of RAM, the size here is set to 7168 MB (7 GB). If your system has more RAM, make this partition larger. Choose !!linuxswap!! as file system: {F20436, alt=Calamares install 5f, size=full} 5g. Next, create root partition (place where your system is going to be installed). In the example here the size is set to 20 GB. You can set it larger if you plan to install a lot of sotware. Choose !!ext4!! as filesystem, as it is the most stable and most tested. Don't use !!btrfs!! on your production builds! Set **/** for mount point: {F20438, alt=Calamares install 5g, size=full} 5h. Create the home partition. This is the place where your data will reside. Use the rest of disk space. Set **/home** for mount point: {F20440, alt=Calamares install 5h, size=full} 5i. Review your partitioning: {F20442, alt=Calamares install 5i, size=full} Follow steps **6**-**10** from //Simple install//.