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+.TH INITRAMFS.CONF 5  "2018/07/18" "initramfs\-tools" "File Formats Manual"
+
+.SH NAME
+initramfs.conf \- configuration file for mkinitramfs
+
+.SH DESCRIPTION
+The behaviour of
+.B mkinitramfs
+can be modified by its configuration file.
+
+Each line in the file can be a configuration variable, a blank line,
+or a comment. The value of an variable is assigned by an statement
+of the form: \fIname\fP=[\fIvalue\fP]
+
+Configuration options can be broken out into configuration snippets and
+placed in individual files in the /etc/initramfs-tools/conf.d directory.  Files
+in this directory are always read \fBafter\fP the main configuration file,
+so you can override the settings in the main config file without editing it
+directly.
+
+.SH GENERAL VARIABLES
+.TP
+\fB MODULES
+Specifies the modules for the initramfs image.
+
+Modules listed in \fI/etc/initramfs-tools/modules\fP and
+\fI/usr/share/initramfs-tools/modules.d/*\fP are always included in the
+initramfs, and are loaded early in the boot process.
+
+
+\fIlist\fP doesn't load any additional modules at boot time, other than those
+listed in the above files.
+
+\fImost\fP adds most file system, all ata, sata, scsi and usb drivers.
+
+\fIdep\fP tries to guess which modules are necessary for the running box and
+only adds those modules.
+
+\fInetboot\fP adds the base and network modules, but skips block devices.
+
+
+The default setting is \fImost\fP.
+
+.TP
+\fB BUSYBOX
+Include busybox utilities for the boot scripts.
+If set to 'n'
+.B mkinitramfs
+will build an initramfs without busybox.
+Beware that many boot scripts need busybox utilities.
+
+.TP
+\fB KEYMAP
+If set to 'y', the console keymap will be loaded during the initramfs stage.
+The keymap will anyway be loaded by the initscripts later, and the packages
+that might need input will normally set this variable automatically, so there
+should normally be no need to set this.
+
+.TP
+\fB COMPRESS
+Specifies the compression method used for the initramfs image.
+.B mkinitramfs
+will default to gzip if the kernel lacks support (CONFIG_RD) or the
+corresponding userspace utility is not present.
+
+.TP
+\fB UMASK
+Set the umask value of the generated initramfs file.
+Useful to not disclose eventual keys.
+
+.TP
+\fB BOOT
+Allows one to use an nfs drive as the root of the drive.
+The default is to boot from \fIlocal\fP media (hard drive, USB stick).
+Set to \fInfs\fP for an NFS root share.
+
+.TP
+\fB RUNSIZE
+The size of the \fI/run\fP tmpfs mount point in bytes (suffixes are supported)
+or as percentage of your physical RAM. This parameter is used as the value of
+the size mount option to tmpfs. See
+\fBhttps://www.kernel.org/doc/Documentation/filesystems/tmpfs.txt\fR for
+details. Can be overridden by an optional \fBinitramfs.runsize=\fR bootarg.
+The default is 10%.
+
+.SH VARIABLES FOR LOCAL BOOT
+.TP
+\fB RESUME
+Specifies the device used for suspend-to-disk (hibernation), which the
+initramfs code should attempt to resume from.  If this is not defined
+or is set to \fIauto\fP,
+.B mkinitramfs
+will automatically select the largest available swap partition.
+Set it to \fInone\fP to disable resume from disk.
+
+.TP
+\fB FSTYPE
+Specifies the filesystem type(s) to support, separated by commas.  If
+this is not defined or is set to \fIauto\fP, \fBmkinitramfs\fP will
+automatically detect the current root and \fI/usr\fP filesystem types.
+
+.SH VARIABLES FOR NFS BOOT
+.TP
+\fB DEVICE
+Specifies the default network interface to use, like eth0.  The \fIip\fP or
+\fIBOOTIF\fP bootargs may override this.
+
+.TP
+\fB ROOT
+Allows optional root bootarg hardcoding, when no root bootarg can be passed.
+A root bootarg overrides that special setting.
+
+.TP
+\fB NFSROOT
+Defaults to \fIauto\fP in order to pick up value from DHCP server.
+Otherwise you need to specify \fIHOST:MOUNT\fP.
+
+.SH FILES
+.TP
+.I /etc/initramfs-tools/initramfs.conf
+
+.SH AUTHOR
+The initramfs-tools are written by Maximilian Attems <maks@debian.org>,
+Jeff Bailey <jbailey@raspberryginger.com> and numerous others.
+Loosely based on mkinitrd.conf by Herbert Xu.
+
+.SH SEE ALSO
+.BR
+.IR initramfs-tools (7),
+.IR mkinitramfs (8),
+.IR update-initramfs (8).