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+# Accessing the BIOS
+
+This guide explains how to safely access the BIOS of your Ugreen NASync device and make important initial configurations.
+
+## Methods to Access BIOS
+
+There are two simple methods to access the BIOS/Boot-Menu of your NASync:
+
+### Method 1: Keyboard Shortcuts
+During boot, continuously press either of these key combinations:
+- `Ctrl + F2`
+- `Ctrl + F12`
+
+### Method 2: SSH Command
+If you have SSH access enabled in UG-OS:
+1. Login to your device via SSH
+2. Execute the following command:
+```bash
+systemctl reboot --firmware-setup
+```
+::: warning
+Some unofficial guides suggest renaming the EFI folder in the boot partition. This method is **not recommended** as it unnecessarily modifies the boot partition and could potentially cause issues.
+:::
+
+## Important BIOS Configuration
+
+### Disabling the Watchdog
+The watchdog is a security feature that will restart your device if UG-OS is not running. This can interfere with BIOS configuration and alternative OS installations.
+
+::: tip Important
+It's recommended to disable the watchdog as your first action in BIOS because:
+1. Being in BIOS counts as "UG-OS not running"
+2. The watchdog will force a restart after a few minutes if not disabled
+3. This can interrupt your BIOS configuration process
+:::
+
+**Steps to disable watchdog:**
+1. Enter BIOS using one of the methods above
+2. Navigate to the watchdog settings
+3. Disable the watchdog feature
+4. Save changes and reset
+5. Re-enter BIOS to safely continue your configuration
+
+After disabling the watchdog, you can freely explore and configure other BIOS settings without time constraints.
+
+::: info Credit
+This guide is based on the work of [Florian Faber](https://www.flofaber.com/log/ugreen-nas)
+:::