Create UEFI boot USB: Difference between revisions

Revision as of 13:46, 30 December 2018

This article explains how to create an UEFI boot USB with parted and gummiboot.

In this example we will use /dev/sdX. This will be different depending on your system.

Create GPT boot partition

Install parted

apk add parted

Create a single UEFI boot partitions.

Warning: This will erase all content of your /dev/sdX. Make sure that you use correct device.

parted --script /dev/sdX mklabel gpt parted --script --align=optimal /dev/sdX mkpart ESP fat32 1MiB 100% parted --script /dev/sdX set 1 boot on

Create fat32 filesystem

Create a fat32 system with the name `Alpine`.

mkfs.vfat -n ALPINE /dev/sdX1

Copy content of ISO image to filesystem

It is possible to mount the iso image and copy files with cp or rsync and it is also possible to use 7z to extract content from the iso. In this example I will use the uniso utility from alpine-conf package.

mount -t vfat /dev/sdX1 /mnt cd /mnt uniso < /path/to/alpine-3.4.0-x86_64.iso

Unmount the partition

Finally umount the disk

cd ~ && umount /mnt

@@ Line 26: / Line 26: @@
 {{Cmd | mount -t vfat /dev/sdX1 /mnt
-  cd /mnt && uniso < /path/to/alpine-3.4.0-x86_64.iso }}
+  cd /mnt
+ uniso < /path/to/alpine-3.4.0-x86_64.iso }}
-== Copy gummiboot efi binary ==
-{{note| Gummiboot has been forked in Alpine Linux since it has been [https://www.freedesktop.org/wiki/Software/systemd/systemd-boot/ consumed by systemd upstream].}}
-UEFI will look for a {{Path|EFI/bootx64.efi}} as a fallback efi loader. We copy {{Path|gummibootx64.efi}} to this location.
-{{Cmd | mkdir -p /mnt/EFI/Boot
- apk add gummiboot
- cp /usr/lib/gummiboot/gummibootx64.efi /mnt/EFI/Boot/bootx64.efi }}
-== Create configuration files for boot loader ==
-We need create some configuration files for gummiboot.
-{{Cmd | mkdir -p loader/entries }}
-{{Cat | loader/loader.conf |default alpine
-timeout 4
-}}
-The options are taken from {{Path|boot/syslinux/syslinux.cfg}}
-{{Cat | loader/entries/alpine.conf |title    Alpine Linux
-linux    /boot/vmlinuz-hardened
-initrd   /boot/initramfs-hardened
-options  modloop{{=}}/boot/modloop-hardened modules{{=}}loop,squashfs,sd-mod,usb-storage quiet
-}}
+== Unmount the partition ==
 Finally umount the disk
 {{Cmd | cd ~ && umount /mnt}}
 [[Category:Installation]]