Bootable Linux USB stick: Difference between revisions

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  chroot /mnt/sysimage
  chroot /mnt/sysimage


install updates:
install Fedora updates:
  dnf -y update    # dnf on FC23 is successor to yum
  dnf -y update    # dnf on FC23 is successor to yum


configure grub2 for (U)EFI systems:
configure grub2 for (U)EFI systems:
disable auto recognition of other installed Operating systems (specific to current computer), and
 
update grub2-efi.cfg to use uuid's (devices not consistent across different machines)
*disable auto recognition of other installed Operating systems (specific to current computer), and
*update grub2-efi.cfg
  echo 'GRUB_DISABLE_OS_PROBER=”true”' >> /etc/default/grub
  echo 'GRUB_DISABLE_OS_PROBER=”true”' >> /etc/default/grub
  grub2-mkconfig -o /etc/grub2-efi.cfg
  grub2-mkconfig -o /etc/grub2-efi.cfg
(switches from devices to uuid and removes boot entries for other OS's)
(last step automatically puts UUID's to recognise the boot device in grub2-efi.cfg ; default after fresh Fedora installation is the device name which might be different on another computer)
 
Performance tuning (not strictly required):


Performance tuning (not strictly required): We use ext4 filesystems and <code>data=writeback,nobarrier </code> in /etc/fstab. To be able to set these options also on the / filesystem, we use tune2fs on a Linux machine where the stick (dev/sd?) is just plugged in (i.e. not booted from):
We use ext4 filesystems and <code>data=writeback,nobarrier </code> in /etc/fstab. To be able to set these options also on the / filesystem, we use tune2fs to set both as default mount options on a Linux machine where the stick (dev/sd?) is just plugged in (i.e. not booted from):
  tune2fs -o journal_data_writeback,nobarrier /dev/sd?4
  tune2fs -o journal_data_writeback,nobarrier /dev/sd?4
  tune2fs -o journal_data_writeback,nobarrier /dev/sd?5
  tune2fs -o journal_data_writeback,nobarrier /dev/sd?5
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