diff --git a/src/system.js b/src/system.js
index da03105c0..eb4a996fb 100644
--- a/src/system.js
+++ b/src/system.js
@@ -62,8 +62,10 @@ async function getDisks() {
     const disks = {}; // by file system
     let rootDisk;
 
+    const DISK_TYPES = [ 'ext4', 'xfs', 'cifs', 'nfs', 'fuse.sshfs' ]; // we don't show size of contents in untracked disk types
+
     for (const disk of dfEntries) {
-        if (disk.type !== 'ext4' && disk.type !== 'xfs') continue;
+        if (!DISK_TYPES.includes(disk.type)) continue;
         if (disk.mountpoint === '/') rootDisk = disk;
         disks[disk.filesystem] = {
             filesystem: disk.filesystem,
@@ -92,18 +94,21 @@ async function getDisks() {
     const backupConfig = await settings.getBackupConfig();
     if (backupConfig.provider === 'filesystem') {
         const [, dfResult] = await safe(df.file(backupConfig.backupFolder));
-        disks[dfResult?.filesystem || rootDisk.filesystem].contents.push({ type: 'standard', id: 'cloudron-backup', path: backupConfig.backupFolder });
+        const filesystem = dfResult?.filesystem || rootDisk.filesystem;
+        if (disks[filesystem]) disks[filesystem].contents.push({ type: 'standard', id: 'cloudron-backup', path: backupConfig.backupFolder });
     }
 
     const [dockerError, dockerInfo] = await safe(docker.info());
     if (!dockerError) {
         const [, dfResult] = await safe(df.file(dockerInfo.DockerRootDir));
-        disks[dfResult?.filesystem || rootDisk.filesystem].contents.push({ type: 'standard', id: 'docker', path: dockerInfo.DockerRootDir });
+        const filesystem = dfResult?.filesystem || rootDisk.filesystem;
+        if (disks[filesystem]) disks[filesystem].contents.push({ type: 'standard', id: 'docker', path: dockerInfo.DockerRootDir });
     }
 
     for (const volume of await volumes.list()) {
         const [, dfResult] = await safe(df.file(volume.hostPath));
-        disks[dfResult?.filesystem || rootDisk.filesystem].contents.push({ type: 'volume', id: volume.id, path: volume.hostPath });
+        const filesystem = dfResult?.filesystem || rootDisk.filesystem;
+        if (disks[filesystem]) disks[filesystem].contents.push({ type: 'volume', id: volume.id, path: volume.hostPath });
     }
 
     for (const app of await apps.list()) {
@@ -111,7 +116,8 @@ async function getDisks() {
 
         const dataDir = await apps.getStorageDir(app);
         const [, dfResult] = await safe(df.file(dataDir));
-        disks[dfResult?.filesystem || rootDisk.filesystem].contents.push({ type: 'app', id: app.id, path: dataDir });
+        const filesystem = dfResult?.filesystem || rootDisk.filesystem;
+        if (disks[filesystem]) disks[filesystem].contents.push({ type: 'app', id: app.id, path: dataDir });
     }
 
     const swaps = await getSwaps();