diff --git a/install.sh b/install.sh
index ac5c7bf..7a1181d 100644
--- a/install.sh
+++ b/install.sh
@@ -28,10 +28,10 @@ a
 w
 EOF
 if [ $? != 0 ] ; then exit 1 ; fi
-echo "> created DOS partition table on $drive with one bootable partition."
-sudo mkfs.ext4 $drive*1 || exit 1 # /dev/sda 1 or /dev/nvme0n1 p1 => *1 instead of just 1
+echo "> created DOS partition table on /dev/$drive with one bootable partition."
+sudo mkfs.ext4 /dev/$drive*1 || exit 1 # /dev/sda 1 or /dev/nvme0n1 p1 => *1 instead of just 1
 echo "> formatted."
-sudo mount $drive*1 /mnt || exit 1
+sudo mount /dev/$drive*1 /mnt || exit 1
 echo "> mounted."
 echo "> generating config"
 sudo nixos-generate-config --root /mnt