libata-acpi: fix _GTF command protocol for ATAPI devices

[powerpc.git] / Documentation / initrd.txt

diff --git a/Documentation/initrd.txt b/Documentation/initrd.txt
index b1b6440..15f1b35 100644 (file)
--- a/Documentation/initrd.txt
+++ b/Documentation/initrd.txt
@@ -72,6 +72,22 @@ initrd adds the following new options:
     initrd is mounted as root, and the normal boot procedure is followed,
     with the RAM disk still mounted as root.
 
     initrd is mounted as root, and the normal boot procedure is followed,
     with the RAM disk still mounted as root.
 

+Compressed cpio images
+----------------------
+
+Recent kernels have support for populating a ramdisk from a compressed cpio
+archive, on such systems, the creation of a ramdisk image doesn't need to
+involve special block devices or loopbacks, you merely create a directory on
+disk with the desired initrd content, cd to that directory, and run (as an
+example):
+
+find . | cpio --quiet -c -o | gzip -9 -n > /boot/imagefile.img
+
+Examining the contents of an existing image file is just as simple:
+
+mkdir /tmp/imagefile
+cd /tmp/imagefile
+gzip -cd /boot/imagefile.img | cpio -imd --quiet

 
 Installation
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 Installation
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