diff --git a/docs/initramfs-initrd.img.md b/docs/initramfs-initrd.img.md
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+## Create initramfs initrd img
+
+```
+apt install initramfs-tools -y
+mkinitramfs -o /boot/initrd.img
+# update-initramfs -k $(uname -r) -c -b /boot
+```
+
+## Add to config
+
+```
+initramfs initrd.img followkernel
+```