diff --git a/dashboard/src/components/BackupProviderForm.vue b/dashboard/src/components/BackupProviderForm.vue
index 1b0b09f7b..538417f21 100644
--- a/dashboard/src/components/BackupProviderForm.vue
+++ b/dashboard/src/components/BackupProviderForm.vue
@@ -172,12 +172,6 @@ onMounted(async () => {
       <SingleSelect id="blockDevicePath" v-if="provider === 'xfs'" v-model="providerConfig.mountOptionDiskPath" :options="xfsBlockDevices" option-label="label" option-key="path"/>
     </FormGroup>
 
-      <!-- Disk -->
-    <FormGroup v-if="provider === 'disk'">
-      <label class="control-label">{{ $t('backups.configureBackupStorage.diskPath') }}</label>
-      <TextInput id="mountOptionDiskPathInput" v-model="providerConfig.mountOptionDiskPath" placeholder="/dev/disk/by-uuid/uuid" required />
-    </FormGroup>
-
     <!-- SSHFS -->
     <FormGroup v-if="provider === 'sshfs'">
       <label for="mountOptionPortInput">{{ $t('backups.configureBackupStorage.port') }}</label>
diff --git a/dashboard/src/components/BackupSiteAddDialog.vue b/dashboard/src/components/BackupSiteAddDialog.vue
index 872622b1c..0505d87de 100644
--- a/dashboard/src/components/BackupSiteAddDialog.vue
+++ b/dashboard/src/components/BackupSiteAddDialog.vue
@@ -124,7 +124,7 @@ async function onSubmit() {
         data.mountOptions.privateKey = providerConfig.value.mountOptionPrivateKey;
         data.preserveAttributes = true;
       }
-    } else if (provider.value === 'ext4' || provider.value === 'xfs' || provider.value === 'disk') {
+    } else if (provider.value === 'ext4' || provider.value === 'xfs') {
         data.mountOptions.diskPath = providerConfig.value.mountOptionDiskPath;
         data.preserveAttributes = true;
     } else if (provider.value === 'mountpoint') {
diff --git a/dashboard/src/constants.js b/dashboard/src/constants.js
index 64f734bba..044906e19 100644
--- a/dashboard/src/constants.js
+++ b/dashboard/src/constants.js
@@ -293,7 +293,6 @@ const STORAGE_PROVIDERS = [
     { name: 'Cloudflare R2', value: 'cloudflare-r2' },
     { name: 'Contabo Object Storage', value: 'contabo-objectstorage', regions: REGIONS_CONTABO },
     { name: 'DigitalOcean Spaces', value: 'digitalocean-spaces', regions: REGIONS_DIGITALOCEAN },
-    { name: 'External/Local Disk (EXT4 or XFS)', value: 'disk' },
     { name: 'EXT4 Disk', value: 'ext4' },
     { name: 'Exoscale SOS', value: 'exoscale-sos', regions: REGIONS_EXOSCALE },
     { name: 'Filesystem', value: 'filesystem' },
diff --git a/dashboard/src/utils.js b/dashboard/src/utils.js
index 7bc69d7c0..b8fe53927 100644
--- a/dashboard/src/utils.js
+++ b/dashboard/src/utils.js
@@ -43,7 +43,7 @@ function download(filename, text) {
 }
 
 function mountlike(provider) {
-  return provider === 'sshfs' || provider === 'cifs' || provider === 'nfs' || provider === 'mountpoint' || provider === 'ext4' || provider === 'xfs' || provider === 'disk';
+  return provider === 'sshfs' || provider === 'cifs' || provider === 'nfs' || provider === 'mountpoint' || provider === 'ext4' || provider === 'xfs';
 }
 
 function s3like(provider) {
diff --git a/dashboard/src/views/RestoreView.vue b/dashboard/src/views/RestoreView.vue
index 910d587da..260519863 100644
--- a/dashboard/src/views/RestoreView.vue
+++ b/dashboard/src/views/RestoreView.vue
@@ -179,7 +179,7 @@ async function onSubmit() {
         config.mountOptions.privateKey = providerConfig.value.mountOptionPrivateKey;
         config.preserveAttributes = true;
       }
-    } else if (provider.value === 'ext4' || provider.value === 'xfs' || provider.value === 'disk') {
+    } else if (provider.value === 'ext4' || provider.value === 'xfs') {
         config.mountOptions.diskPath = providerConfig.value.mountOptionDiskPath;
         config.preserveAttributes = true;
     } else if (provider.value === 'mountpoint') {
diff --git a/dashboard/src/views/VolumesView.vue b/dashboard/src/views/VolumesView.vue
index f9038e929..5bd99d3ef 100644
--- a/dashboard/src/views/VolumesView.vue
+++ b/dashboard/src/views/VolumesView.vue
@@ -327,7 +327,7 @@ onMounted(async () =>{
       <TableView :columns="columns" :model="volumes" :busy="busy" :fixed-layout="true" :placeholder="$t('volumes.emptyPlaceholder')">
         <template #target="{ item:volume }">
           <span v-if="volume.mountType === 'mountpoint' || volume.mountType === 'filesystem'">{{ volume.hostPath }}</span>
-          <span v-else-if="volume.mountType === 'ext4' || volume.mountType === 'xfs' || volume.mountType === 'disk'">{{ volume.mountOptions.diskPath }}</span>
+          <span v-else-if="volume.mountType === 'ext4' || volume.mountType === 'xfs'">{{ volume.mountOptions.diskPath }}</span>
           <span v-else-if="volume.mountType === 'sshfs'">{{ volume.mountOptions.host + '/' + volume.mountOptions.remoteDir }}</span>
           <!-- cifs/nfs -->
           <span v-else>{{ volume.mountOptions.host + volume.mountOptions.remoteDir }}</span>
diff --git a/migrations/20260330000000-backupSites-remove-disk-provider.js b/migrations/20260330000000-backupSites-remove-disk-provider.js
new file mode 100644
index 000000000..af50c2797
--- /dev/null
+++ b/migrations/20260330000000-backupSites-remove-disk-provider.js
@@ -0,0 +1,46 @@
+'use strict';
+
+const child_process = require('node:child_process');
+
+function patchMountFile(mountPath, fstype) {
+    const mountFilename = child_process.execSync(`systemd-escape -p --suffix=mount "${mountPath}"`, { encoding: 'utf8' }).trim();
+    const mountFile = `/etc/systemd/system/${mountFilename}`;
+
+    try {
+        child_process.execSync(`sed -i 's/^Type=auto$/Type=${fstype}/' "${mountFile}"`);
+        child_process.execSync('systemctl daemon-reload');
+        console.log(`Patched ${mountFile}: Type=auto -> Type=${fstype}`);
+    } catch (e) {
+        console.log(`Warning: failed to patch ${mountFile}: ${e.message}`);
+    }
+}
+
+exports.up = async function (db) {
+    const results = await db.runSql('SELECT id, configJson FROM backupSites WHERE provider = ?', ['disk']);
+
+    for (const row of results) {
+        const config = JSON.parse(row.configJson);
+
+        let fstype = 'ext4';
+        try {
+            const diskPath = config.mountOptions.diskPath;
+            const output = child_process.execSync(`lsblk --paths --json --list --fs ${diskPath}`, { encoding: 'utf8' });
+            const info = JSON.parse(output);
+            if (info.blockdevices[0].fstype === 'xfs') fstype = 'xfs';
+        } catch (e) {
+            console.log(`Could not detect filesystem type for backup site ${row.id}, defaulting to ext4: ${e.message}`);
+        }
+
+        config._provider = fstype;
+        console.log(`Migrating backup site ${row.id} from disk to ${fstype}`);
+        await db.runSql('UPDATE backupSites SET provider = ?, configJson = ? WHERE id = ?', [fstype, JSON.stringify(config), row.id]);
+
+        if (config._managedMountPath) {
+            patchMountFile(config._managedMountPath, fstype);
+        }
+    }
+};
+
+exports.down = function (db, callback) {
+    callback();
+};
diff --git a/src/backupsites.js b/src/backupsites.js
index ead3e2591..46b979855 100644
--- a/src/backupsites.js
+++ b/src/backupsites.js
@@ -26,7 +26,7 @@ const { log } = logger('backups');
 // config: depends on the 'provider' field. 'provider' is not stored in config object. but it is injected when calling the api backends
 //      s3 providers - accessKeyId, secretAccessKey, bucket, prefix etc . see s3.js
 //      gcs - bucket, prefix, projectId, credentials . see gcs.js
-//      ext4/xfs/disk (managed providers) - mountOptions (diskPath), prefix, noHardlinks. disk is legacy.
+//      ext4/xfs (managed providers) - mountOptions (diskPath), prefix, noHardlinks
 //      nfs/cifs/sshfs (managed providers) - mountOptions (host/username/password/seal/privateKey etc), prefix, noHardlinks
 //      filesystem - backupDir, noHardlinks
 //      mountpoint - mountPoint, prefix, noHardlinks
@@ -35,7 +35,7 @@ const BACKUP_TARGET_FIELDS = [ 'id', 'name', 'provider', 'configJson', 'limitsJs
 
 const STORAGE_PROVIDERS = {
     nfs: storageFilesystem, cifs: storageFilesystem, sshfs: storageFilesystem,
-    mountpoint: storageFilesystem, disk: storageFilesystem, ext4: storageFilesystem,
+    mountpoint: storageFilesystem, ext4: storageFilesystem,
     xfs: storageFilesystem, filesystem: storageFilesystem,
     s3: storageS3, minio: storageS3, 's3-v4-compat': storageS3,
     'digitalocean-spaces': storageS3, 'exoscale-sos': storageS3, wasabi: storageS3,
diff --git a/src/mounts.js b/src/mounts.js
index f9b80ed46..b33317d8a 100644
--- a/src/mounts.js
+++ b/src/mounts.js
@@ -19,7 +19,6 @@ const MOUNT_TYPE_NFS = 'nfs';
 const MOUNT_TYPE_SSHFS = 'sshfs';
 const MOUNT_TYPE_EXT4 = 'ext4'; // raw disk path
 const MOUNT_TYPE_XFS = 'xfs'; // raw disk path
-const MOUNT_TYPE_DISK = 'disk'; // this provides a selector of block devices
 
 
 const ADD_MOUNT_CMD = path.join(import.meta.dirname, 'scripts/addmount.sh');
@@ -56,8 +55,7 @@ async function validateMountOptions(type, options) {
         if (typeof options.remoteDir !== 'string') return new BoxError(BoxError.BAD_FIELD, 'remoteDir is not a string');
         return null;
     case MOUNT_TYPE_EXT4:
-    case MOUNT_TYPE_XFS:
-    case MOUNT_TYPE_DISK: {
+    case MOUNT_TYPE_XFS: {
         if (typeof options.diskPath !== 'string') return new BoxError(BoxError.BAD_FIELD, 'diskPath is not a string');
         const [error, output] = await safe(shell.spawn('lsblk', ['--paths', '--json', '--list', '--fs', options.diskPath ], { encoding: 'utf8' }));
         if (error) return new BoxError(BoxError.BAD_FIELD, `Bad disk path: ${error.message}`);
@@ -88,7 +86,6 @@ function isManagedProvider(provider) {
     case MOUNT_TYPE_NFS:
     case MOUNT_TYPE_EXT4:
     case MOUNT_TYPE_XFS:
-    case MOUNT_TYPE_DISK:
         return true;
     default:
         return false;
@@ -133,11 +130,6 @@ async function renderMountFile(mount) {
         what = mountOptions.diskPath; // like /dev/disk/by-uuid/uuid or /dev/disk/by-id/scsi-id
         options = 'discard,defaults,noatime,pquota';
         break;
-    case MOUNT_TYPE_DISK:
-        type = 'auto';
-        what = mountOptions.diskPath; // like /dev/disk/by-uuid/uuid or /dev/disk/by-id/scsi-id
-        options = 'discard,defaults,noatime';
-        break;
     case MOUNT_TYPE_SSHFS: {
         const keyFilePath = path.join(paths.SSHFS_KEYS_DIR, `identity_file_${path.basename(hostPath)}`);
         if (!safe.fs.writeFileSync(keyFilePath, `${mount.mountOptions.privateKey}\n`, { mode: 0o600 })) throw new BoxError(BoxError.FS_ERROR, `Could not write private key: ${safe.error.message}`);
@@ -263,5 +255,4 @@ export default {
     MOUNT_TYPE_SSHFS,
     MOUNT_TYPE_EXT4,
     MOUNT_TYPE_XFS,
-    MOUNT_TYPE_DISK,
 };
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index 2e46966c3..2cb5cbec0 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -66,7 +66,6 @@ function hasChownSupportSync(config) {
     case mounts.MOUNT_TYPE_NFS:
     case mounts.MOUNT_TYPE_EXT4:
     case mounts.MOUNT_TYPE_XFS:
-    case mounts.MOUNT_TYPE_DISK:
     case mounts.MOUNT_TYPE_FILESYSTEM:
         return true;
     case mounts.MOUNT_TYPE_SSHFS:
@@ -414,7 +413,6 @@ function getLocationLabel(config) {
     switch (config._provider) {
     case mounts.MOUNT_TYPE_FILESYSTEM:
         return config.backupDir + suffix;
-    case mounts.MOUNT_TYPE_DISK:
     case mounts.MOUNT_TYPE_EXT4:
     case mounts.MOUNT_TYPE_XFS:
     case mounts.MOUNT_TYPE_MOUNTPOINT: