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howtos:slackware_admin:booting_install_from_hdd [2012/10/25 09:00 (UTC)]
bormant [GRUB-legacy]
howtos:slackware_admin:booting_install_from_hdd [2013/05/23 12:33 (UTC)] (current)
whiz [GRUB-legacy]
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 In order to boot the Slackware installation environment without creating install media you need an image of this boot environment,​ a suitable Linux kernel, and a boot loader. In order to boot the Slackware installation environment without creating install media you need an image of this boot environment,​ a suitable Linux kernel, and a boot loader.
  
 +With grub2 you can also boot from the iso file by adding it to the grub menu.
 ===== Image of the Environment ===== ===== Image of the Environment =====
 All software that you can use after booting the Slackware installation media resides in an [[wp>​initrd|initial ramdisk image]]. You can find it as ''/​isolinux/​initrd.img''​ on any installation media or at the same location on any of the Slackware mirrors. ​ All software that you can use after booting the Slackware installation media resides in an [[wp>​initrd|initial ramdisk image]]. You can find it as ''/​isolinux/​initrd.img''​ on any installation media or at the same location on any of the Slackware mirrors. ​
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 <​note>​If you use a separate partition for ''/​boot'',​ then you must remove "/​boot"​ from any pathnames.</​note>​ <​note>​If you use a separate partition for ''/​boot'',​ then you must remove "/​boot"​ from any pathnames.</​note>​
  
 +
 +==== Boot ISO with GRUB2 ====
 +Add to ''/​etc/​grub.d/​40_custom'':​ <​file>​
 +menuentry "​Slackware 14 install (DVD)" {
 + ​insmod loopback
 + ​insmod iso9660
 + set isofile="/​slackware64-14.0-install-dvd.iso"​
 + ​loopback loop (hd0,​2)$isofile
 + linux (loop)/​kernels/​huge.s/​bzImage ​ load_ramdisk=1 prompt_ramdisk=0 rw printk.time=0 SLACK_KERNEL=huge.s
 + ​initrd (loop)/​isolinux/​initrd.img
 +}
 +</​file>​
 +<​note>​(hd0,​2) means "//the second partition on the first drive//"​ (i.e. ''/​dev/​sda2''​). You can find the right value in the "''​set root''"​ command of the menu entry used to boot your system, or else consult with [[http://​www.gnu.org/​software/​grub/​manual/​grub.html|GRUB manual]]. </​note>​
 +Then update grub with: <​file>​
 + ​grub-mkconfig -o /​boot/​grub/​grub.cfg
 +</​file>​
 +<​note>​On Slackware before running grub-mkconfig you have to run ln -s /dev/sda2 /dev/root
 +where for sda2 you have to enter your root device.
 +</​note>​
 ===== Test It ===== ===== Test It =====
 Reboot your system and select SwSetup at boot prompt. Reboot your system and select SwSetup at boot prompt.

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