Add default grub configuration

root/etc/default/grub

@@ -0,0 +1,62 @@
+# GRUB boot loader configuration
+
+GRUB_DEFAULT=0
+GRUB_TIMEOUT=5
+GRUB_DISTRIBUTOR="Arch"
+GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet"
+GRUB_CMDLINE_LINUX="cryptdevice=UUID=9a400ce4-df98-43eb-b88c-009a359873a5:cryptroot:allow-discards lukskeyfile=UUID=80c09daa-c562-4242-90a9-8258f6442bec:/root-key"
+# Grub should automatically detect the root UUID after decryption and set
+# that as root, we could also use root=/dev/mapper/cryptroot cmdline arg,
+# however that could lead to problems, since GRUB defines the root anyway,
+# so we'd have 2 root definitions, we could also use the UUID manually by using
+# root=7173b256-9d90-41f5-beac-4d01b3b5bbd5
+
+# Preload both GPT and MBR modules so that they are not missed
+GRUB_PRELOAD_MODULES="part_gpt part_msdos"
+
+# Uncomment to enable booting with LUKS encrypted /boot drive
+#GRUB_ENABLE_CRYPTODISK=y
+
+# Set to 'countdown' or 'hidden' to change timeout behavior,
+# press ESC key to display menu.
+GRUB_TIMEOUT_STYLE=menu
+
+# Uncomment to use basic console
+GRUB_TERMINAL_INPUT=console
+
+# Uncomment to disable graphical terminal
+#GRUB_TERMINAL_OUTPUT=console
+
+# The resolution used on graphical terminal
+# note that you can use only modes which your graphic card supports via VBE
+# you can see them in real GRUB with the command `vbeinfo'
+GRUB_GFXMODE=auto
+
+# Uncomment to allow the kernel use the same resolution used by grub
+GRUB_GFXPAYLOAD_LINUX=keep
+
+# Uncomment if you want GRUB to pass to the Linux kernel the old parameter
+# format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx"
+#GRUB_DISABLE_LINUX_UUID=true
+
+# Uncomment to disable generation of recovery mode menu entries
+GRUB_DISABLE_RECOVERY=true
+
+# Uncomment and set to the desired menu colors.  Used by normal and wallpaper
+# modes only.  Entries specified as foreground/background.
+#GRUB_COLOR_NORMAL="light-blue/black"
+#GRUB_COLOR_HIGHLIGHT="light-cyan/blue"
+
+# Uncomment one of them for the gfx desired, a image background or a gfxtheme
+#GRUB_BACKGROUND="/path/to/wallpaper"
+#GRUB_THEME="/path/to/gfxtheme"
+
+# Uncomment to get a beep at GRUB start
+#GRUB_INIT_TUNE="480 440 1"
+
+# Uncomment to make GRUB remember the last selection. This requires
+# setting 'GRUB_DEFAULT=saved' above.
+#GRUB_SAVEDEFAULT=true
+
+# Uncomment to disable submenus in boot menu
+#GRUB_DISABLE_SUBMENU=y