owned by group root in the initial ramdisk image.
If you are not sure, leave it set to "0".
+
+config RD_GZIP
+ bool "Initial ramdisk compressed using gzip"
+ default y
+ depends on BLK_DEV_INITRD=y
+ select DECOMPRESS_GZIP
+ help
+ Support loading of a gzip encoded initial ramdisk or cpio buffer.
+ If unsure, say Y.
+
+config RD_BZIP2
+ bool "Initial ramdisk compressed using bzip2"
+ default n
+ depends on BLK_DEV_INITRD=y
+ select DECOMPRESS_BZIP2
+ help
+ Support loading of a bzip2 encoded initial ramdisk or cpio buffer
+ If unsure, say N.
+
+config RD_LZMA
+ bool "Initial ramdisk compressed using lzma"
+ default n
+ depends on BLK_DEV_INITRD=y
+ select DECOMPRESS_LZMA
+ help
+ Support loading of a lzma encoded initial ramdisk or cpio buffer
+ If unsure, say N.