README.md: Add more informations

README.md

@@ -9,13 +9,15 @@ Otherwise, change linux_dev variable with you kernel variant and change flake.lo
 
 On other distros:
 
-1. With Nix env, .envrc, change line by `use flake .#other`
+1. With direnv, in .envrc, change line by `use flake .#other`
 
-2. Without Nix env, you need to setup LINUX_MODULES_FOLDER to linux modules folder of your distro (ex: `/lib/modules/$(uname -r)`) in your shell (bashrc)
+2. With nix only, use `nix develop .#other`
+
+3. Otherwise, you need to setup LINUX_MODULES_FOLDER to linux modules folder of your distro (ex: `/lib/modules/$(uname -r)`) in your shell (ex: .bashrc)
 
 ## make : targets list
 
-- all : Compiling kernel
+- all : Compiling kernel (by default)
 - clean : Cleaning build folder
 
 All subfolder is configured to use LINUX_MODULES_FOLDER env variable set by flake develop
@@ -28,7 +30,7 @@ Step 1: Load module
 sudo insmod [module_name].ko
 ```
 
-**Warning**: Can fail if secure boot is enabled
+**Warning**: Can fail if secure boot is enabled (see notes about secure boot in below)
 
 Step 2: Check logs
 
@@ -61,18 +63,18 @@ Search -I args and -D args
 
 ### Sign kernel module for testing with secure boot enabled
 
-Prerequisites: Own secure boot keys
+Prerequisites: Own secure boot keys configured.
 
 Secure boot keys can be found in :
 
-- Fedora : `/etc/pki/akmods/certs/`
+- Fedora : `/etc/pki/akmods`
 - With sbctl : `/var/lib/sbctl`
 
 ```
 sign-file sha256 $SECUREBOOT_KEYS_PATH/private_key.priv $SECUREBOOT_KEYS_PATH/public_key.der <module_file>.ko
 ```
 
-sign-file is in `/usr/src/kernels/$(uname -r)/scripts`
+sign-file executable is in `/usr/src/kernels/$(uname -r)/scripts`
 
 Full example (run as root):