diff --git a/src/common.rs b/src/common.rs
index f3485271e..e65cc54c3 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -1922,7 +1922,7 @@ impl Disk {
     ///     println!("[{:?}] {:?}", disk.name(), disk.file_system());
     /// }
     /// ```
-    pub fn file_system(&self) -> &[u8] {
+    pub fn file_system(&self) -> &OsStr {
         self.inner.file_system()
     }
 
diff --git a/src/debug.rs b/src/debug.rs
index 0cd0c6fb6..98976a021 100644
--- a/src/debug.rs
+++ b/src/debug.rs
@@ -39,10 +39,7 @@ impl fmt::Debug for Disk {
             fmt,
             "Disk({:?})[FS: {:?}][Type: {:?}][removable: {}] mounted on {:?}: {}/{} B",
             self.name(),
-            self.file_system()
-                .iter()
-                .map(|c| *c as char)
-                .collect::<Vec<_>>(),
+            self.file_system(),
             self.kind(),
             if self.is_removable() { "yes" } else { "no" },
             self.mount_point(),
diff --git a/src/unix/apple/disk.rs b/src/unix/apple/disk.rs
index 2722a15b9..bc0d84af4 100644
--- a/src/unix/apple/disk.rs
+++ b/src/unix/apple/disk.rs
@@ -15,14 +15,14 @@ use core_foundation_sys::string::{self as cfs, CFStringRef};
 use libc::c_void;
 
 use std::ffi::{CStr, OsStr, OsString};
-use std::os::unix::ffi::OsStrExt;
+use std::os::unix::ffi::{OsStrExt, OsStringExt};
 use std::path::{Path, PathBuf};
 use std::ptr;
 
 pub(crate) struct DiskInner {
     pub(crate) type_: DiskKind,
     pub(crate) name: OsString,
-    pub(crate) file_system: Vec<u8>,
+    pub(crate) file_system: OsString,
     pub(crate) mount_point: PathBuf,
     volume_url: RetainedCFURL,
     pub(crate) total_space: u64,
@@ -39,7 +39,7 @@ impl DiskInner {
         &self.name
     }
 
-    pub(crate) fn file_system(&self) -> &[u8] {
+    pub(crate) fn file_system(&self) -> &OsStr {
         &self.file_system
     }
 
@@ -400,9 +400,19 @@ unsafe fn new_disk(
 
     let available_space = get_available_volume_space(disk_props);
 
-    let file_system = IntoIterator::into_iter(c_disk.f_fstypename)
-        .filter_map(|b| if b != 0 { Some(b as u8) } else { None })
-        .collect();
+    let file_system = {
+        let len = c_disk
+            .f_fstypename
+            .iter()
+            .position(|&b| b == 0)
+            .unwrap_or(c_disk.f_fstypename.len());
+        OsString::from_vec(
+            c_disk.f_fstypename[..len]
+                .iter()
+                .map(|c| *c as u8)
+                .collect(),
+        )
+    };
 
     Some(Disk {
         inner: DiskInner {
diff --git a/src/unix/freebsd/disk.rs b/src/unix/freebsd/disk.rs
index cacba4c74..a42bd7ca1 100644
--- a/src/unix/freebsd/disk.rs
+++ b/src/unix/freebsd/disk.rs
@@ -3,6 +3,7 @@
 use crate::{Disk, DiskKind};
 
 use std::ffi::{OsStr, OsString};
+use std::os::unix::ffi::OsStringExt;
 use std::path::{Path, PathBuf};
 
 use super::utils::c_buf_to_str;
@@ -13,7 +14,7 @@ pub(crate) struct DiskInner {
     mount_point: PathBuf,
     total_space: u64,
     available_space: u64,
-    file_system: Vec<u8>,
+    file_system: OsString,
     is_removable: bool,
 }
 
@@ -26,7 +27,7 @@ impl DiskInner {
         &self.name
     }
 
-    pub(crate) fn file_system(&self) -> &[u8] {
+    pub(crate) fn file_system(&self) -> &OsStr {
         &self.file_system
     }
 
@@ -106,14 +107,18 @@ pub unsafe fn get_all_list(container: &mut Vec<Disk>) {
             // If we have missing information, no need to look any further...
             continue;
         }
-        let fs_type: &[libc::c_char] =
-            if let Some(pos) = fs_info.f_fstypename.iter().position(|x| *x == 0) {
-                &fs_info.f_fstypename[..pos]
-            } else {
-                &fs_info.f_fstypename
-            };
-        let fs_type: &[u8] = std::slice::from_raw_parts(fs_type.as_ptr() as _, fs_type.len());
-        match fs_type {
+        let fs_type: Vec<u8> = {
+            let len = fs_info
+                .f_fstypename
+                .iter()
+                .position(|x| *x == 0)
+                .unwrap_or(fs_info.f_fstypename.len());
+            fs_info.f_fstypename[..len]
+                .iter()
+                .map(|c| *c as u8)
+                .collect()
+        };
+        match &fs_type[..] {
             b"autofs" | b"devfs" | b"linprocfs" | b"procfs" | b"fdesckfs" | b"tmpfs"
             | b"linsysfs" => {
                 sysinfo_debug!(
@@ -145,7 +150,7 @@ pub unsafe fn get_all_list(container: &mut Vec<Disk>) {
 
         // USB keys and CDs are removable.
         let is_removable =
-            [b"USB", b"usb"].iter().any(|b| b == &fs_type) || fs_type.starts_with(b"/dev/cd");
+            [b"USB", b"usb"].iter().any(|b| *b == &fs_type[..]) || fs_type.starts_with(b"/dev/cd");
 
         let f_frsize: u64 = vfs.f_frsize as _;
 
@@ -156,7 +161,7 @@ pub unsafe fn get_all_list(container: &mut Vec<Disk>) {
                 mount_point: PathBuf::from(mount_point),
                 total_space: vfs.f_blocks.saturating_mul(f_frsize),
                 available_space: vfs.f_favail.saturating_mul(f_frsize),
-                file_system: fs_type.to_vec(),
+                file_system: OsString::from_vec(fs_type),
                 is_removable,
             },
         });
diff --git a/src/unix/linux/disk.rs b/src/unix/linux/disk.rs
index f2f0f9ab0..35665076e 100644
--- a/src/unix/linux/disk.rs
+++ b/src/unix/linux/disk.rs
@@ -19,7 +19,7 @@ macro_rules! cast {
 pub(crate) struct DiskInner {
     type_: DiskKind,
     device_name: OsString,
-    file_system: Vec<u8>,
+    file_system: OsString,
     mount_point: PathBuf,
     total_space: u64,
     available_space: u64,
@@ -35,7 +35,7 @@ impl DiskInner {
         &self.device_name
     }
 
-    pub(crate) fn file_system(&self) -> &[u8] {
+    pub(crate) fn file_system(&self) -> &OsStr {
         &self.file_system
     }
 
@@ -96,7 +96,7 @@ impl crate::DisksInner {
 fn new_disk(
     device_name: &OsStr,
     mount_point: &Path,
-    file_system: &[u8],
+    file_system: &OsStr,
     removable_entries: &[PathBuf],
 ) -> Option<Disk> {
     let mount_point_cpath = to_cpath(mount_point);
@@ -273,7 +273,7 @@ fn get_all_list(container: &mut Vec<Disk>, content: &str) {
             new_disk(
                 fs_spec.as_ref(),
                 Path::new(&fs_file),
-                fs_vfstype.as_bytes(),
+                fs_vfstype.as_ref(),
                 &removable_entries,
             )
         })
diff --git a/src/unknown/disk.rs b/src/unknown/disk.rs
index f4cec7c17..727d33657 100644
--- a/src/unknown/disk.rs
+++ b/src/unknown/disk.rs
@@ -15,8 +15,8 @@ impl DiskInner {
         unreachable!()
     }
 
-    pub(crate) fn file_system(&self) -> &[u8] {
-        &[]
+    pub(crate) fn file_system(&self) -> &OsStr {
+        Default::default()
     }
 
     pub(crate) fn mount_point(&self) -> &Path {
diff --git a/src/windows/disk.rs b/src/windows/disk.rs
index 641fc2db1..18f772d86 100644
--- a/src/windows/disk.rs
+++ b/src/windows/disk.rs
@@ -133,7 +133,7 @@ pub(crate) unsafe fn get_volume_path_names_for_volume_name(
 pub(crate) struct DiskInner {
     type_: DiskKind,
     name: OsString,
-    file_system: Vec<u8>,
+    file_system: OsString,
     mount_point: Vec<u16>,
     s_mount_point: OsString,
     total_space: u64,
@@ -150,7 +150,7 @@ impl DiskInner {
         &self.name
     }
 
-    pub(crate) fn file_system(&self) -> &[u8] {
+    pub(crate) fn file_system(&self) -> &OsStr {
         &self.file_system
     }
 
@@ -343,13 +343,8 @@ pub(crate) unsafe fn get_list() -> Vec<Disk> {
                 }
             };
 
-            let name_len = name.iter().position(|&x| x == 0).unwrap_or(name.len());
-            let name = OsString::from_wide(&name[..name_len]);
-            let file_system = file_system
-                .iter()
-                .take_while(|c| **c != 0)
-                .map(|c| *c as u8)
-                .collect::<Vec<_>>();
+            let name = os_string_from_zero_terminated(&name);
+            let file_system = os_string_from_zero_terminated(&file_system);
             mount_paths
                 .into_iter()
                 .map(move |mount_path| Disk {
@@ -368,3 +363,8 @@ pub(crate) unsafe fn get_list() -> Vec<Disk> {
         })
         .collect::<Vec<_>>()
 }
+
+fn os_string_from_zero_terminated(name: &[u16]) -> OsString {
+    let len = name.iter().position(|&x| x == 0).unwrap_or(name.len());
+    OsString::from_wide(&name[..len])
+}