How to Install Slackware Linux 15: A Full Step-by-Step Guide

This comprehensive guide will show you how to install Slackware Linux so you can get on your path to becoming a Slackware expert.

Slackware is the oldest actively maintained Linux distro. Its first release dated back in July 1993, almost 29 years ago. But what’s really amazing is that even after 29 years, Slackware is still Slackware. I mean that the installation process and wizard appear to be the same. The method of operation remains unchanged.

So, Slackware is a fantastic Linux distro, but many people do not use it since it is difficult to install. Moreover, you will often hear that this is a distro targeted the advanced Linux users.

Well, I will not argue whether this is true or not. But I will show you how easy it is to install Slackware Linux and get started with it. So let our Slackware installation journey begin.

Step 1: Download the Slackware Installation ISO Image

As we informed you, Slackware 15.0 was recently released, so the first step is to get the installation ISO image file. First, visit the Slackware Linux download page at and click on the menu link on the left, “Slackware ISO Images.”

Download the Slackware installation ISO image

You will be taken to a page containing Slackware releases for the last 15 years. Click on the folder containing the 64-bit version of Slackware 15 and download the slackware64-15.0-install-dvd.iso installation ISO image.

Download the Slackware installation ISO image

Since the file is large, 3.5GB, I recommend downloading it with a tool like wget. To do this, run in your preferred terminal emulator:

wget language: JavaScript (javascript)

Step 2: Prepare Live Bootable USB

Once your Slackware Linux ISO file finishes downloading, you will have to create a live USB of Slackware Linux from the ISO you just downloaded. There are many ways to prepare a live USB, one of them is by using the dd command.

Alternatively, you can use applications such as Etcher or Ventoy, which are also good options for creating a bootable USB drive.

Step 3: Boot Slackware 15 Live USB

Once you have created a live USB for Slackware Linux, shut down your computer, plug the USB into it, and boot your system.

Please keep in mind that you may not be able to boot from the Live USB with Secure Boot enabled. Instead, you’ll need to enter the UEFI menus and disable Secure Boot since Slackware does not currently work if Secure Boot is enabled.

But before we move on to the installation process, let’s say a few words about the Slackware installer itself.

The distro does not offer a graphical installer that most Linux users are used to these days, but only a text-based one. But don’t panic because the installation program itself is a step-by-step process. In fact, it is effortless once you understand it.

Step 3.1: Boot Into Installation Program

So, once you have correctly booted into the Slackware ISO, you should see something similar to the image shown below. Press Enter to continue.

Slackware 15 installation booted from ISO image

Step 3.2: Select Keyboard

Suppose you want to select a different keyboard from the US; press 1 to select it. However, since the default US keyboard mapping is what we want, we press Enter to accept the default suggestion and move on.

Select keyboard

Step 3.3: Logging Into the Installer

Now that the default keyboard layout has been selected, Slackware displays the login screen. Type root and press Enter to proceed to the next step, which is disk partitioning.

Log in into Slackware 15 Installer

Step 4: Disk Partitioning

Now you need to partition the disk before running the setup program. Type cfdisk to open up the partition manager.

Starting cfdisk partition manager

Select gpt and hit Enter to proceed.

Setting up GPT partition type

Step 4.1: Create Root Partition

Then select Free Space and hit on New from the bottom menu. You can navigate through the menu options using the Tab or arrow keys.

Creating root partition

Use the partition manager to create a Root (/) partition. Give the space you want, for example, 20GB (20G), and press the Enter key.

Creating root partition

Select Type from the bottom menu with the /dev/vda1 partition still selected.

Note: In your case, the partition may have another name such as /dev/sda1, /dev/sdb1, etc. This is not a problem and should not worry or confuse you.

Creating root partition

Use the up and down arrow keys to select Linux filesystem as type and hit Enter.

Set root partition filesystem type as ext4

Step 4.2: Create Swap Partition

Now let’s create the Swap partition using the same procedure. Select the remaining Free space again and hit on New.

Creating swap partition

Type the partition size in GB (4G) and press the Enter key.

Creating swap partition

Select Type from the bottom menu with the /dev/vda2 partition still selected.

Creating swap partition

Use the up and down arrow keys again to select Linux swap as type and hit Enter.

Set swap partition filesystem type as ext4

Step 4.3: Write Changes to Disk

Now it’s time to save the changes to the disk. Select the Write option and hit Enter.

Writing changes to the disk

Type yes and press the Enter key.

Writing changes to the disk

Finally, we’re done here. Select Quit and press Enter to do so.

Quit the cfdisk partitioning tool

Step 5: Launch Setup Program

Now that your partitions are ready, launch the Slackware installer by typing setup and pressing Enter.

Launching the Setup program

You will be greeted by the screen shown in the image below.

Slackware installer program

Step 6: Setting Up Swap Partition

Select the ADDSWAP option and hit Enter.

Setting up swap partition

The Slackware installer will autodetect and display the swap partitions on your hard drive, allowing you to select one to format and enable. Just press Enter.

Setting up swap partition

Next, choose No to skip checking for bad blocks.

Setting up swap partition

The installer will inform you that the swap partition has been successfully configured. Press the Enter key to continue to the next step.

Setting up swap partition

Step 7: Setting Up Root Partition

Next, the installer will ask you to choose the default partition to install Slackware on. Use the up and down arrow keys to select your root partition (/); in our case, this is /dev/vda1 and press Enter.

Setting up root partition

On the next screen, select the Format option and hit Enter.

Setting up root partition

Now choose the filesystem to use. Choose ext4 and press the Enter key.

Setting up root partition

The installer will inform you that the root partition has been successfully configured. Press the Enter key to continue to the next step.

Setting up root partition

Step 8: Select Slackware Installation Source

The source section is where you select the source media from which you install Slackware.

Choose the Install from a Slackware CD or DVD if you’ve burned the ISO to a disk or installing Slackware Linux on a virtual machine via software such as VirtualBox.

Of course, select the Install from Slackware USB stick option if you have prepared an installation USB stick and will install Slackware directly on your server, laptop, or desktop computer.

We install it on a virtual machine in this tutorial, so we choose option 1.

Select Slackware installation source

Select the auto option and press Enter on the next screen.

Select Slackware installation source

Step 9: Select Software to Install

Now the Slackware installer will list some categories of software to pick from. If you are not sure exactly which to choose, it’s best to go with the defaults. So, press Enter to move next.

Select software to install

On the next screen, use the up and down arrow keys to select the full option and press Enter on the keyboard.

Select Slackware installation type

Slackware will start installing itself on your hard drive. However, it will take some time, so be patient and wait for the installation to complete.

Slackware Linux installation

Step 10: Configuring the Bootloader

After the Slackware Linux installation completes, the installer will provide you the option to build a USB boot drive. Choose Skip and hit Enter.

Configuring the LILO bootloader

Then the installer prompts you to install the LILO bootloader. If Slackware is the only operating system on your computer, choose simple and press the Enter key. If you are dual-booting, the expert option is a better choice.

In this guide, we choose the simple option because Slackware 15 will be the only operating system on our computer.

Configuring the LILO bootloader

You can select a resolution for your text console on this screen. My recommendation is to stick with the default one. So choose standard and hit Enter.

Configuring the LILO bootloader

Don’t type anything on the next screen; just press Enter.

Configuring the LILO bootloader

The final step in LILO bootloader configuration is to specify where the bootloader should be installed. If you want to use another operating system with a different bootloader, select the Root option. Otherwise, go with MBR.

Because we are installing Slackware 15 as the single operating system on our computer, we stick with the MBR option.

Configuring the LILO bootloader

On the next screen, choose No and press the Enter key.

Configuring the LILO bootloader

Step 11: Configuring the Network

Now it’s time to configure the network. Select Yes and hit Enter to be guided through the process of configuring your internet connection in your new Slackware 15 installation.

Configuring the network

First, you need to set the hostname. So, enter the name under which you want your new Slackware 15 installation to appear on the network. In this guide, we choose to use slackware15 as a name.

Enter your choice and confirm by pressing Enter.

Configuring the network

Next, you need to set the domain name. Type localdomain and hit Enter.

Configuring the network

From the next screen, select No and press Enter to continue.

Configuring the network

Pick NetworkManager to handle your wired and wireless network devices and press Enter.

Configuring the network

Finally, confirm your choice to complete the network configuration by selecting Yes.

Configuring the network

Hit Enter once again.

Configuring the network

Step 12: Configure Startup Services

After configuring the network, the next decision is which services will be launched at boot time. Again, my advice is to accept the default suggestions and confirm with the OK button.

Configure startup services

Choose No on the next screen and press Enter.

Console font configuration

Step 13: Configure Hardware Clock

Setting up your PC’s hardware clock is next. Choose NO and hit Enter to proceed to the Time Zone configuration.

Set up the hardware clock

Step 14: Configure Time Zone

Find your preferred timezone, highlight it, and press the Enter key to apply it. In our case, I choose America/New_York.

Configure Time Zone

Step 15: Choose Default Terminal Editor

The Slackware installer lets you set the default terminal text editor on the next screen. Choose vim and press the Enter key to proceed to the next screen.

Choose default terminal editor

Step 16: Choose Default Window Manager

Now it’s time to set the default desktop environment. My advice is to choose KDE. Hit the Enter key. We’re almost done with the installer.

Choose default window manager

Step 17: Set Root Password

The last step and the Slackware 15 installation will be over is to set the root user password. Select Yes and hit Enter to continue.

Setting up the root user password

Type and retype the root user password and hit Enter.

Setting up the root user password

The installer will inform you that the configuration process of your new Slackware 15 system is complete. Just press the Enter key.

Slackware 15 installation and configuration process completed

Step 18: Reboot Your System

You’ll be returned to the main menu. Select EXIT, and hit Enter.

Reboot your system

On the next screen, just hit Enter again.

Reboot your system

Finally, choose Reboot and confirm by pressing the Enter key.

Reboot your system

After the reboot, you’ll be greeted by Slackware’s LILO bootloader screen. Just press Enter to boot into your newly installed Slackware 15 Linux system.

Slackware Linux 15 installation succeeded

Step 19: Creating Regular User

During the installation of your new Slackware 15 system, it may have struck you that no user account was created for you to carry out your daily work. We will do that in the next step.

After the system reboot, log in with the root user. For this guide, we have chosen to create a user account named linuxiac. But, of course, you can select a name entirely of your choosing.

useradd -m -g users -G wheel,floppy,audio,video,cdrom,plugdev,power,netdev,lp,scanner -s /bin/bash linuxiac
Creating regular user

Run the passwd command, followed by the username, to change the password. Next, you’ll be asked to enter and confirm the new user’s password.

passwd linuxiac
Setting user password

We are done with that here. One final touch remains – telling our Slackware 15 Linux system to start the graphical login manager automatically.

Step 20: Graphical Login

To start with a graphical login screen on boot instead of Slackware’s default console login, change the default run level from 3 to 4 in the /etc/inittab file.

Open the file by typing the command below, edit the displayed line and save the change.

vim /etc/inittab
Changing the default runlevel on Slackware 15 Linux

That’s all. All that’s left to do is reboot your Slackware 15 Linux system.


Step 21: Log in to Your New Slackware 15 Linux Installation

After the reboot, you’ll get a graphical login.

Slackware 15 Graphical Login Screen

That’s it! You have every reason to be proud of yourself for your effort during every step of the Slackware installation process. Now log in and start using your new Slackware 15 Linux system.

Slackware Linux 15 running KDE Desktop Environment

Some Post-Installation Steps

So, you already have a running Slackware 15 Linux system and probably already want to try installing some software?

Before do that, you need to perform some little actions. First, you must enable at least one of the official mirrors containing packages for Slackware. A list of available mirrors for your Slackware version can be found in the /etc/slackpkg/mirrors file.

Open the file as a root user in a text editor like Nano or Viм and remove the comment from a single mirror URL.

vim /etc/slackpkg/mirrors
Enable Slackware's mirror

Save the file and exit. Next, you need to initialize slackpkg’s database by running as the root user:

slackpkg update gpg
slackpkg update

The slackpkg update command connects to a Slackware mirror to update your computer’s local package information database but does not actually install any package.

To update your Slackware Linux installation to the latest patches, type:

slackpkg update
slackpkg install-new
slackpkg upgrade-all
slackpkg clean-systemCode language: JavaScript (javascript)

Of course, if the full system upgrade includes updating the Linux kernel, run the command below as root user to update the information in the Lilo boot loader. Otherwise, after reboot, you may end up with a non-booting system.


Well, that was all. So from here on, it’s all in your hands!

How to install Slackware Linux 15


Slackware is an independent Linux distro developed by Patrick Volkerding that doesn’t follow any particular period to release a new version like Ubuntu or rolling release distros. Instead, building Slackware aims to give exceptional stability, so there isn’t a new version released every year.

Last but not least, please consider supporting Patrick and his family by visiting his Patreon Page, choosing a membership category, and becoming a Patron. More on the topic here: Donating to Slackware.

So, I attempted to cover everything about how to install Slackware Linux and make the process as simple as possible for you. I know it was long, but you can surely accomplish it with a bit of patience and be proud to be a Slackware user.

It has been a pleasure, and I hope you find this helpful guide. Thanks for using it!

If you want to share your experience with the Slackware installation process, please feel free to leave your comment below.

Bobby Borisov

Bobby Borisov

Bobby, an editor-in-chief at Linuxiac, is a Linux professional with over 20 years of experience. With a strong focus on Linux and open-source software, he has worked as a Senior Linux System Administrator, Software Developer, and DevOps Engineer for small and large multinational companies.

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