База знаний » Linux Gentoo

h1. Pxe-livecd

h2. Настройки загрузчика:

h3. Файлы

*tftp/gentoo*

*tftp/initramfs.igz*

*tftp/pxelinux.0*

*tftp/pxelinux.cfg/default*

<pre>

default gentoo

label gentoo

 kernel gentoo

 append initrd=initramfs.igz root=/dev/ram0 init=/linuxrc loop=/image.squashfs looptype=squashfs cdroot=1 real_root=/

</pre>

h2. Исправление для image.squashfs

На примере install-amd64-minimal-20120621.iso

<pre>

<code class="diff">

diff -u init.orig init

--- init.orig	2012-08-01 12:37:57.000000000 +0600

+++ init	2012-08-01 12:39:08.000000000 +0600

@@ -372,10 +372,10 @@

 		[ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1

 	fi

-	if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]

-	then

-		bootstrapCD

-	fi

+#	if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]

+#	then

+#		bootstrapCD

+#	fi

 	if [ "${REAL_ROOT}" = '' ]

 	then

@@ -460,7 +460,7 @@

 		else

 			bad_msg "Block device ${REAL_ROOT} is not a valid root device..."

 			REAL_ROOT=""

-			got_good_root=0

+			got_good_root=1

 		fi

 	done

@@ -524,7 +524,7 @@

 	[ -z "${LOOP}" ] && find_loop

 	[ -z "${LOOPTYPE}" ] && find_looptype

-	cache_cd_contents

+	#cache_cd_contents

 	# If encrypted, find key and mount, otherwise mount as usual

 	if [ -n "${CRYPT_ROOT}" ]

</code>

</pre>

h3. Исходные файлы:

<pre>

image.squashfs

isolinux/gentoo

isolinux/gentoo.igz

isolinux/isolinux.cfg

</pre>

h3. Приготовление

<pre>

mkdir unpack

cd unpack

xzcat ../gentoo.igz | cpio -mdi

vi init

mkdir mnt/cdrom

mv -v ../image.squashfs mnt/cdrom/

find | cpio -o -H newc | xz -v --check=crc32 --x86 --lzma2 > ../initramfs.ixz

</pre>