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--- multiboot_usb_key [2011/11/03 12:06] – mNZSdxuWOtKPsQ 41.89.6.3
+++ multiboot_usb_key [2011/11/08 22:04] – old revision restored memeruiz
@@ Line 1: / Line 1: @@
-gwKY7l , [url=http://hehvpzqmrgpg.com/]hehvpzqmrgpg[/url], [link=http://fvstlojjinua.com/]fvstlojjinua[/link], http://nxnstegjpcje.com/
+====== Multiboot usb key with 32 and 64bits debian installers and debian live ======
+===== Preparing the usb key =====
+  * Create a partition table and make a fat32 partition that uses the whole usb key space.
+  cfdisk /dev/sdb
+  mkfs.vfat /dev/sdb1
+  * Install grub on the usb key
+  mount /dev/sdb1 /media/usb0
+  grub-install --no-floppy --root-directory=/media/usb0 /dev/sdb
+  * Create a grub.cfg file in /media/usb0/boot/grub/ with the following contents:
+  menuentry "debian-installer-i386" {
+    linux /boot/vmlinuz_i386 vga=788 -- quiet
+    initrd /boot/initrd_i386.gz
+  }
+  menuentry "debian-installer-i386 expert" {
+    linux /boot/vmlinuz_i386 priority=low vga=788 --
+    initrd /boot/initrd_i386.gz
+  }
+  menuentry "debian-installer-amd64" {
+    linux /boot/vmlinuz_amd64 vga=788 -- quiet
+    initrd /boot/initrd_amd64.gz
+  }
+  menuentry "debian-installer-amd64 expert" {
+    linux /boot/vmlinuz_amd64 priority=low vga=788 --
+    initrd /boot/initrd_amd64.gz
+  }
+  menuentry "live amd64" {
+    linux /boot/live_amd64/vmlinuz boot=live live-media-path=/boot/live_amd64 persistent-path=/persistent/amd64/ live-config persistent
+    initrd /boot/live_amd64/initrd.img
+  }
+  menuentry "live i386" {
+    linux /boot/live_i386/vmlinuz boot=live live-media-path=/boot/live_i386 persistent-path=/persistent/i386/ live-config persistent
+    initrd /boot/live_i386/initrd.img
+  }
+===== Debian installer =====
+  * Get the hd-usb debian installer vmlinuz and initrd.gz files from the web. Rename them to vmlinuz_$arch and initrd_$arch.gz, where $arch is the computer architecture (i386, amd64). Copy them to /media/usb0/boot.
+  * Get the corresponding netinstall iso files for the installed architectures and copy them to /media/usb0
+===== Debian live =====
+  * Create some necessary directories:
+  mkdir /media/usb0/persistent
+  mkdir /media/usb0/persistent/amd64
+  mkdir /media/usb0/persistent/i386
+  mkdir /media/usb0/boot/live_amd64
+  mkdir /media/usb0/boot/live_i386
+==== Generate the debian live image ====
+  * Install live-helper package
+  * Create live image (do this from a 64bit machine):
+  mkdir /tmp/d-l
+  mkdir /tmp/d-l/amd64
+  cd /tmp/d-l/amd64
+  sudo lh clean --binary
+  sudo lh config -b usb-hdd -a amd64 -d sid
+  sudo lh build
+  * When the build is finished edit the file chroot/sbin/live-snapshot
+  * Replace the line:
+  SNAP_COW=$(echo "${SNAP_RESYNC_STRING}" | sed -e 's|^/root\([^:.]*\).*$|'"${DEF_SNAP_COW}"'\1|')
+  * With:
+  SNAP_COW=$(echo "${SNAP_RESYNC_STRING}" | sed -e 's|^/cow\([^:.]*\).*$|'"${DEF_SNAP_COW}"'\1|')
+  * Regenerate the live image:
+  sudo lh clean --binary
+  sudo lh binary
+  * Loop mount the generated live image, copy the important parts to the usb key, and extract the initrd contents:
+  mount -o loop,offset=512 binary.img /mnt
+  cd /mnt/live
+  cp * /media/usb0/boot/live_amd64
+  mkdir /tmp/initrd_amd64
+  cp /mnt/live/initrd.img /tmp/initrd_amd64/initrd.img.gz
+  cd /tmp/initrd_amd64
+  gunzip initrd.img.gz
+  cpio -ivmd -F initrd.img
+  rm initrd.img
+  * Edit the file scripts/live
+  * Replace line:
+  ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
+  * With:
+  ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> ${rootmnt}/etc/live.conf # for resync on reboot/halt
+  * And replace line:
+  snapdata=$(find_files "${PERSISTENT_PATH}${snap_label}.squashfs  ${PERSISTENT_PATH}${snap_label}.cpio.gz ${PERSISTENT_PATH}${snap_label}.ext2  ${PERSISTENT_PATH}${snap_label}.ext3 ${PERSISTENT_PATH}${snap_label}.ext4 ${PERSISTENT_PATH}${snap_label}.jffs2")
+  * With:
+  snapdata=$(find_files "${PERSISTENT_PATH}/${snap_label}.squashfs  ${PERSISTENT_PATH}/${snap_label}.cpio.gz ${PERSISTENT_PATH}/${snap_label}.ext2  ${PERSISTENT_PATH}/${snap_label}.ext3 ${PERSISTENT_PATH}/${snap_label}.ext4 ${PERSISTENT_PATH}/${snap_label}.jffs2")
+  * Recreate initrd.img file, and copy it to the usb key:
+  find .| cpio -o -H newc | gzip -9 > ../initrd.img
+  cp ../initrd.img /media/usb0/boot/live_amd64
+  * Repeat the whole procedure for the 32bits case, just use i386 where amd64 is.