+\fBlive\-boot\fR can be configured (but not activated) through configuration files. Those files can be placed either in the root filesystem itself (/etc/live/boot.conf, /etc/live/boot/*), or on the live media (live/boot.conf, live/boot/*).
+These environment variables can only be set in the configuration files:
+
+.TP
+\fBDISABLE_CDROM\fR=[\fItrue\fR|\fIfalse\fR]
+Disable support for booting from CD-ROMs. If set to '\fItrue\fR' mkinitramfs will build an initramfs without the kernel modules for reading CD-ROMs.
+
+.TP
+\fBDISABLE_FAT\fR=[\fItrue\fR|\fIfalse\fR]
+Disable support for booting from FAT file systems. If set to '\fItrue\fR' mkinitramfs will build an initramfs without the kernel module vfat and some nls_* modules.
+
+.TP
+\fBDISABLE_FUSE\fR=[\fItrue\fR|\fIfalse\fR]
+Disable support for booting from FUSE-based file systems. If set to '\fItrue\fR' mkinitramfs will build an initramfs without the kernel module fuse and file systems that depend on it (like curlftpfs and httpfs2).
+
+.TP
+\fBDISABLE_NTFS\fR=[\fItrue\fR|\fIfalse\fR]
+Disable support for booting from NTFS file systems. If set to '\fItrue\fR' mkinitramfs will build an initramfs without the kernel module ntfs.
+
+.TP
+\fBDISABLE_USB\fR=[\fItrue\fR|\fIfalse\fR]
+Disable support for booting from USB devices. If set to '\fItrue\fR' mkinitramfs will build an initramfs without the kernel module sd_mod.
+
+.TP
+\fBMINIMAL\fR=[\fItrue\fR|\fIfalse\fR]
+Build a minimal initramfs. If set to '\fItrue\fR' mkinitramfs will build an initramfs without some udev scripts and without rsync.
+
+.TP
+\fBPERSISTENCE_FSCK\fR=[\fItrue\fR|\fIfalse\fR]
+Run fsck on persistence filesystem on boot. Will attempt to repair errors. The execution log will be saved in /var/log/live/fsck.log.
+
+.TP
+\fBFSCKFIX\fR=[\fItrue\fR|\fIfalse\fR]
+If PERSISTENCE_FSCK or forcefsck are set, will pass -y to fsck to stop it from asking questions interactively and assume yes to all queries.