Create a Bootable Device

Creating a bootable Alpine Linux USB Stick with UNetbootin

UNetbootin is a graphical tool that allows you to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. UNetbootin is available for many distributions and Windows. This process applies to all versions of Alpine Linux, and results in a run-from-ram style installation.

Requirements

To create a bootable Alpine Linux USB drive, you will need:

An Alpine Linux ISO image file (Download)
A partitioned and formatted USB drive
UNetbootin

Process

After the launch of UNetbootin, click the Diskimage radio button, and then the ... button to select the Alpine ISO image.

When you selected your USB device under Device and press OK' to proceed. When UNetbootin is done, your USB drive is ready to use.

Creating a bootable Alpine Linux USB Stick from the command line

This process applies to Alpine Linux 1.9.0 or later, and results in a run-from-ram style installation.

Requirements

In order to follow this document, you will need:

Alpine Linux CD-ROM (Download a .iso file containing an Alpine release.)
A USB drive (flash, external HD, card reader, etc.)

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Slow USB Devices

Specifying the 'waitusb=X' option at the end of the syslinux.cfg line might help with certain USB devices that take a bit longer to register. X stands for the amount of seconds kernel will wait before looking for the installation media.

append initrd=/boot/grsec.gz alpine_dev=usbdisk:vfat modules=loop,cramfs,sd-mod,usb-storage quiet waitusb=3

Alpine Linux has some special applications that helps you to use it in the way you want.
Some of the first scripts you are suggested to use is:

setup-alpine (Configures all basic things on your Alpine Linux)
setup-acf (was named setup-webconf before Alpine 1.9 beta 4) (Configures ACF (webconfiguration) so you can manage your box through https)

Note: Just type any of the above commands on your console and hit Enter to execute the script.

Other useful pages

Configure Networking
Setting up a SSH server (Using ssh is a good way to administer your box remotely)
Package Management (apk) (How to add/remove packages on your Alpine)
Init System (rc) (Configure a service to automatically boot at next reboot)
Alpine local backup (lbu) (Permanently store your modifications in case your box needs reboot)