do not error if cannot determine live usb device (#1986)

backend/src/os_install.rs

@@ -37,7 +37,9 @@ pub fn disk() -> Result<(), Error> {
 
 #[command(display(display_none))]
 pub async fn list() -> Result<Vec<DiskInfo>, Error> {
-    let skip = Path::new(
+    let skip = match async {
+        Ok::<_, Error>(
+            Path::new(
                 &String::from_utf8(
                     Command::new("grub-probe-default")
                         .arg("-t")
@@ -48,11 +50,22 @@ pub async fn list() -> Result<Vec<DiskInfo>, Error> {
                 )?
                 .trim(),
             )
-    .to_owned();
+            .to_owned(),
+        )
+    }
+    .await
+    {
+        Ok(a) => Some(a),
+        Err(e) => {
+            tracing::error!("Could not determine live usb device: {}", e);
+            tracing::debug!("{:?}", e);
+            None
+        }
+    };
     Ok(crate::disk::util::list(&Default::default())
         .await?
         .into_iter()
-        .filter(|i| &*i.logicalname != skip)
+        .filter(|i| Some(&*i.logicalname) != skip.as_deref())
         .collect())
 }