diff --git a/public/en/index.gmi b/public/en/index.gmi
index 21d2c5e..f61ec93 100644
--- a/public/en/index.gmi
+++ b/public/en/index.gmi
@@ -15,6 +15,7 @@
 
 ### Software
 
+=> turn-off-imac-startup-sound-in-linux.gmi 2025-10-22 Turn off iMac startup sound in Linux
 => connect-libera-chat-with-yggdrasil.gmi 2025-06-26 Connect Libera.​Chat with Yggdrasil
 => connect-i2p-with-yggdrasil.gmi 2025-06-21 Connect I2P with Yggdrasil
 => mycelium-bittorrent-trackers.gmi 2025-06-21 Mycelium torrent trackers
diff --git a/public/en/turn-off-imac-startup-sound-in-linux.gmi b/public/en/turn-off-imac-startup-sound-in-linux.gmi
new file mode 100644
index 0000000..33e3e76
--- /dev/null
+++ b/public/en/turn-off-imac-startup-sound-in-linux.gmi
@@ -0,0 +1,12 @@
+# Turn off iMac startup sound in Linux
+
+``` bash
+sudo su
+sudo chattr -i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82
+sudo printf "\x07\x00\x00\x00\x00" > /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82
+sudo chattr +i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82
+exit
+```
+* it still sounds, but quietly :)
+
+=> https://gist.github.com/0xbb/ae298e2798e1c06d0753 Source
\ No newline at end of file