diff --git a/user/zshrc/.zshrc b/user/zshrc/.zshrc
index c797d8e..e80131f 100644
--- a/user/zshrc/.zshrc
+++ b/user/zshrc/.zshrc
@@ -10,5 +10,12 @@ source $ZSH/oh-my-zsh.sh
 
 source ~/.local/bin/env-gen.sh
 
+###########################
 # aliases
+###########################
 alias o=xdg-open
+# require /mnt/usb /mnt/sd exist
+alias musb="sudo mount -ouser,umask=0000 /dev/sda1 /mnt/usb"
+alias umusb="sudo umount /mnt/usb"
+alias msd="sudo mount -ouser,umask=0000 /dev/mmcblk0p1 /mnt/sd"
+alias umsd="sudo umount /mnt/sd"