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| The following part describes how to create a custom (writable) USB boot device with Alpine Linux.
| | {{Delete|This include has become obsolete. It is completely unused on the wiki}} |
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| === Copy ISO content to USB stick as individual files ===
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| {{Warning | We assume here ''sda'' is your USB stick which would hold bootable Alpine Linux files. }} | |
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| The following procedure is for Alpine Linux distribution itself, if you are using other Linux distro or other operating system you should know the best how to install syslinux and where ''mbr.bin'' file is located on your filesystem.
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| # If you created a new partition above, format the {{{1|flash medium}}} with a FAT32 filesystem (replacing sda with your {{{1|flash medium}}} name):
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| #: {{Cmd|apk add dosfstools<BR>mkdosfs -F32 /dev/sda1}}
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| # Install syslinux and MBR (replacing sda with your {{{1|flash medium}}} name):
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| #: {{Cmd|{{{|apk add syslinux<BR>dd if=/usr/share/syslinux/mbr.bin of=/dev/sda}}}<BR>syslinux /dev/sda1}}
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| #Copy the files to the {{{1|flash medium}}} (replacing sda with your {{{1|flash medium}}} name):
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| #: {{Cmd|<nowiki>mkdir -p /media/sda1
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| mount -t vfat /dev/sda1 /media/sda1
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| cd /media/cdrom
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| cp -a .alpine-release * /media/sda1/
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| umount /media/sda1</nowiki>}}
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| # (''Optional'') Remove any apkovl files that were transfered as part of the copy process. This should be done if you wish to have a fresh install. Replace sda with your {{{1|flash medium}}} name)
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| #: {{Cmd|<nowiki>mount -t vfat /dev/sda1 /media/sda1
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| rm /media/sda1/*.apkovl.tar.gz
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| umount /media/sda1</nowiki>}}
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| === Troubleshooting ===
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| ==== Wrong Device Name ====
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| If you cannot boot from the {{{1|flash medium}}} and you see something like:
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| Mounting boot media failed.
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| initramfs emergency recovery shell launched. Type 'exit' to continue boot
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| then it is likely that the device name in {{Path|syslinux.cfg}} is wrong. You should replace the device name in this line:
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| append initrd=/boot/grsec.gz alpine_dev='''usbdisk''':vfat modules=loop,cramfs,sd-mod,usb-storage quiet
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| with the proper device name.
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| * For boot from USB, the device name should be 'usbdisk' (as shown above)
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| * For other options, you can run <code>cat /proc/partitions</code> to see the available disks (i.e. 'sda' or 'sdb')
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| ==== Non-FAT32 Filesystems ====
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| When your {{{1|flash medium}}} is formatted with a filesystem other than FAT32, you might have to specify the necessary filesystem modules in the boot parameters.
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| To do so, mount the {{{1|flash medium}}} and change the {{Path|syslinux.cfg}} file line from
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| append initrd=/boot/grsec.gz alpine_dev=usbdisk:vfat modules=loop,cramfs,sd-mod,usb-storage quiet
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| to
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| append initrd=/boot/grsec.gz alpine_dev=usbdisk:'''ext3''' modules=loop,cramfs,sd-mod,usb-storage''',ext3''' quiet
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| in the case of an ext3 formatted partition. A similar procedure might apply to other filesystems (if they are supported by syslinux and the Alpine Linux kernel).
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| [[Category:Installation]]
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