diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index 10a07a1cc..ada5a4752 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -81,8 +81,7 @@ class FirstStageMount {
     FirstStageMount(Fstab fstab);
     virtual ~FirstStageMount() = default;
 
-    // The factory method to create either FirstStageMountVBootV1 or FirstStageMountVBootV2
-    // based on device tree configurations.
+    // The factory method to create a FirstStageMountVBootV2 instance.
     static Result<std::unique_ptr<FirstStageMount>> Create();
     bool DoCreateDevices();    // Creates devices and logical partitions from storage devices
     bool DoFirstStageMount();  // Mounts fstab entries read from device tree.
@@ -125,16 +124,6 @@ class FirstStageMount {
     std::map<std::string, std::vector<std::string>> preload_avb_key_blobs_;
 };
 
-class FirstStageMountVBootV1 : public FirstStageMount {
-  public:
-    FirstStageMountVBootV1(Fstab fstab) : FirstStageMount(std::move(fstab)) {}
-    ~FirstStageMountVBootV1() override = default;
-
-  protected:
-    bool GetDmVerityDevices(std::set<std::string>* devices) override;
-    bool SetUpDmVerity(FstabEntry* fstab_entry) override;
-};
-
 class FirstStageMountVBootV2 : public FirstStageMount {
   public:
     friend void SetInitAvbVersionInRecovery();
@@ -243,11 +232,7 @@ Result<std::unique_ptr<FirstStageMount>> FirstStageMount::Create() {
         return fstab.error();
     }
 
-    if (IsDtVbmetaCompatible(*fstab)) {
-        return std::make_unique<FirstStageMountVBootV2>(std::move(*fstab));
-    } else {
-        return std::make_unique<FirstStageMountVBootV1>(std::move(*fstab));
-    }
+    return std::make_unique<FirstStageMountVBootV2>(std::move(*fstab));
 }
 
 bool FirstStageMount::DoCreateDevices() {
@@ -679,56 +664,6 @@ void FirstStageMount::UseDsuIfPresent() {
     TransformFstabForDsu(&fstab_, active_dsu, dsu_partitions);
 }
 
-bool FirstStageMountVBootV1::GetDmVerityDevices(std::set<std::string>* devices) {
-    need_dm_verity_ = false;
-
-    for (const auto& fstab_entry : fstab_) {
-        // Don't allow verifyatboot in the first stage.
-        if (fstab_entry.fs_mgr_flags.verify_at_boot) {
-            LOG(ERROR) << "Partitions can't be verified at boot";
-            return false;
-        }
-        // Checks for verified partitions.
-        if (fstab_entry.fs_mgr_flags.verify) {
-            need_dm_verity_ = true;
-        }
-    }
-
-    // Includes the partition names of fstab records.
-    // Notes that fstab_rec->blk_device has A/B suffix updated by fs_mgr when A/B is used.
-    for (const auto& fstab_entry : fstab_) {
-        // Skip pseudo filesystems.
-        if (fstab_entry.fs_type == "overlay") {
-            continue;
-        }
-        if (!fstab_entry.fs_mgr_flags.logical) {
-            devices->emplace(basename(fstab_entry.blk_device.c_str()));
-        }
-    }
-
-    return true;
-}
-
-bool FirstStageMountVBootV1::SetUpDmVerity(FstabEntry* fstab_entry) {
-    if (fstab_entry->fs_mgr_flags.verify) {
-        int ret = fs_mgr_setup_verity(fstab_entry, false /* wait_for_verity_dev */);
-        switch (ret) {
-            case FS_MGR_SETUP_VERITY_SKIPPED:
-            case FS_MGR_SETUP_VERITY_DISABLED:
-                LOG(INFO) << "Verity disabled/skipped for '" << fstab_entry->mount_point << "'";
-                return true;
-            case FS_MGR_SETUP_VERITY_SUCCESS:
-                // The exact block device name (fstab_rec->blk_device) is changed to
-                // "/dev/block/dm-XX". Needs to create it because ueventd isn't started in init
-                // first stage.
-                return block_dev_init_.InitDmDevice(fstab_entry->blk_device);
-            default:
-                return false;
-        }
-    }
-    return true;  // Returns true to mount the partition.
-}
-
 // First retrieve any vbmeta partitions from device tree (legacy) then read through the fstab
 // for any further vbmeta partitions.
 FirstStageMountVBootV2::FirstStageMountVBootV2(Fstab fstab)