Function has_valid_mbr 

pub fn has_valid_mbr(device: &impl DirectBlockDevice) -> bool

Check if a device contains a valid MBR.

This function attempts to read an MBR from the device and validates its signature. It’s a quick way to determine if a device has been properly partitioned with MBR.

Arguments

• Device - The storage device to check

Returns

• true - Device contains a valid MBR with proper signature
• false - Device doesn’t contain a valid MBR or cannot be read

Examples

extern crate alloc;
use file_system::{MemoryDevice, mbr::{Mbr, has_valid_mbr}};

let device = MemoryDevice::<512>::new(4 * 1024 * 1024);

// Create and write an MBR
let mbr = Mbr::new_with_signature(0x12345678);
mbr.write_to_device(&device).unwrap();

if has_valid_mbr(&device) {
    println!("Device has a valid MBR");
} else {
    println!("Device needs to be partitioned");
}