diff --git a/libs/vsutil/Android.bp b/libs/vsutil/Android.bp
deleted file mode 100644
index ccb36a0..0000000
--- a/libs/vsutil/Android.bp
+++ /dev/null
@@ -1,26 +0,0 @@
-package {
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-rust_library {
-    name: "libvsutil",
-    crate_name: "vsutil",
-    srcs: ["src/lib.rs"],
-    // Only build on targets which crosvm builds on.
-    enabled: false,
-    target: {
-        android64: {
-            compile_multilib: "64",
-            enabled: true,
-        },
-        linux_bionic_arm64: {
-            enabled: true,
-        },
-    },
-    rustlibs: [
-        "android.system.virtualizationservice-rust",
-        "libbinder_rs",
-        "libdisk",
-    ],
-    apex_available: ["com.android.virt"],
-}
diff --git a/libs/vsutil/src/file.rs b/libs/vsutil/src/file.rs
deleted file mode 100644
index 4adaae1..0000000
--- a/libs/vsutil/src/file.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2023, The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Functions to process files.
-
-use binder::{self, ExceptionCode, ParcelFileDescriptor, Status};
-use std::fs::File;
-
-/// Converts a `&ParcelFileDescriptor` to a `File` by cloning the file.
-pub fn clone_file(fd: &ParcelFileDescriptor) -> binder::Result<File> {
-    fd.as_ref().try_clone().map_err(|e| {
-        Status::new_exception_str(
-            ExceptionCode::BAD_PARCELABLE,
-            Some(format!("Failed to clone File from ParcelFileDescriptor: {:?}", e)),
-        )
-    })
-}
diff --git a/libs/vsutil/src/lib.rs b/libs/vsutil/src/lib.rs
deleted file mode 100644
index cac888a..0000000
--- a/libs/vsutil/src/lib.rs
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2023, The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! This library provides utility functions used by both various
-//! Virtualization services.
-
-mod file;
-mod partition;
-
-pub use file::clone_file;
-pub use partition::init_writable_partition;
diff --git a/libs/vsutil/src/partition.rs b/libs/vsutil/src/partition.rs
deleted file mode 100644
index a4e72de..0000000
--- a/libs/vsutil/src/partition.rs
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright 2023, The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//! Functions to process partitions.
-
-use crate::file::clone_file;
-use android_system_virtualizationservice::aidl::android::system::virtualizationservice::{
-    PartitionType::PartitionType,
-};
-use binder::{self, ExceptionCode, ParcelFileDescriptor, Status};
-use disk::QcowFile;
-use std::io::{Error, ErrorKind, Write};
-
-/// crosvm requires all partitions to be a multiple of 4KiB.
-const PARTITION_GRANULE_BYTES: u64 = 4096;
-
-/// Initialize an empty partition image of the given size to be used as a writable partition.
-pub fn init_writable_partition(
-    image_fd: &ParcelFileDescriptor,
-    size_bytes: i64,
-    partition_type: PartitionType,
-) -> binder::Result<()> {
-    let size_bytes = size_bytes.try_into().map_err(|e| {
-        Status::new_exception_str(
-            ExceptionCode::ILLEGAL_ARGUMENT,
-            Some(format!("Invalid size {}: {:?}", size_bytes, e)),
-        )
-    })?;
-    let size_bytes = round_up(size_bytes, PARTITION_GRANULE_BYTES);
-    let image = clone_file(image_fd)?;
-    // initialize the file. Any data in the file will be erased.
-    image.set_len(0).map_err(|e| {
-        Status::new_service_specific_error_str(-1, Some(format!("Failed to reset a file: {:?}", e)))
-    })?;
-    let mut part = QcowFile::new(image, size_bytes).map_err(|e| {
-        Status::new_service_specific_error_str(
-            -1,
-            Some(format!("Failed to create QCOW2 image: {:?}", e)),
-        )
-    })?;
-
-    match partition_type {
-        PartitionType::RAW => Ok(()),
-        PartitionType::ANDROID_VM_INSTANCE => format_as_android_vm_instance(&mut part),
-        PartitionType::ENCRYPTEDSTORE => format_as_encryptedstore(&mut part),
-        _ => Err(Error::new(
-            ErrorKind::Unsupported,
-            format!("Unsupported partition type {:?}", partition_type),
-        )),
-    }
-    .map_err(|e| {
-        Status::new_service_specific_error_str(
-            -1,
-            Some(format!("Failed to initialize partition as {:?}: {:?}", partition_type, e)),
-        )
-    })
-}
-
-fn round_up(input: u64, granule: u64) -> u64 {
-    if granule == 0 {
-        return input;
-    }
-    // If the input is absurdly large we round down instead of up; it's going to fail anyway.
-    let result = input.checked_add(granule - 1).unwrap_or(input);
-    (result / granule) * granule
-}
-
-fn format_as_android_vm_instance(part: &mut dyn Write) -> std::io::Result<()> {
-    const ANDROID_VM_INSTANCE_MAGIC: &str = "Android-VM-instance";
-    const ANDROID_VM_INSTANCE_VERSION: u16 = 1;
-
-    part.write_all(ANDROID_VM_INSTANCE_MAGIC.as_bytes())?;
-    part.write_all(&ANDROID_VM_INSTANCE_VERSION.to_le_bytes())?;
-    part.flush()
-}
-
-fn format_as_encryptedstore(part: &mut dyn Write) -> std::io::Result<()> {
-    const UNFORMATTED_STORAGE_MAGIC: &str = "UNFORMATTED-STORAGE";
-
-    part.write_all(UNFORMATTED_STORAGE_MAGIC.as_bytes())?;
-    part.flush()
-}
diff --git a/virtualizationmanager/Android.bp b/virtualizationmanager/Android.bp
index fedfd76..59e507f 100644
--- a/virtualizationmanager/Android.bp
+++ b/virtualizationmanager/Android.bp
@@ -54,7 +54,6 @@
         "libtombstoned_client_rust",
         "libvm_control",
         "libvmconfig",
-        "libvsutil",
         "libzip",
         "libvsock",
         "liblibfdt",
diff --git a/virtualizationmanager/src/aidl.rs b/virtualizationmanager/src/aidl.rs
index 4bc25da..468ee19 100644
--- a/virtualizationmanager/src/aidl.rs
+++ b/virtualizationmanager/src/aidl.rs
@@ -53,6 +53,7 @@
     self, wait_for_interface, BinderFeatures, ExceptionCode, Interface, ParcelFileDescriptor,
     Status, StatusCode, Strong,
 };
+use disk::QcowFile;
 use lazy_static::lazy_static;
 use log::{debug, error, info, warn};
 use microdroid_payload_config::{OsConfig, Task, TaskType, VmPayloadConfig};
@@ -63,7 +64,7 @@
 use std::convert::TryInto;
 use std::ffi::CStr;
 use std::fs::{read_dir, remove_file, File, OpenOptions};
-use std::io::{BufRead, BufReader, Write};
+use std::io::{BufRead, BufReader, Error, ErrorKind, Write};
 use std::num::{NonZeroU16, NonZeroU32};
 use std::os::unix::io::{FromRawFd, IntoRawFd};
 use std::os::unix::raw::pid_t;
@@ -71,7 +72,6 @@
 use std::sync::{Arc, Mutex, Weak};
 use vmconfig::VmConfig;
 use vsock::VsockStream;
-use vsutil::{clone_file, init_writable_partition};
 use zip::ZipArchive;
 
 /// The unique ID of a VM used (together with a port number) for vsock communication.
@@ -83,8 +83,19 @@
 /// Gaps in composite disk images are filled with a shared zero.img.
 const ZERO_FILLER_SIZE: u64 = 4096;
 
+/// Magic string for the instance image
+const ANDROID_VM_INSTANCE_MAGIC: &str = "Android-VM-instance";
+
+/// Version of the instance image format
+const ANDROID_VM_INSTANCE_VERSION: u16 = 1;
+
 const MICRODROID_OS_NAME: &str = "microdroid";
 
+const UNFORMATTED_STORAGE_MAGIC: &str = "UNFORMATTED-STORAGE";
+
+/// crosvm requires all partitions to be a multiple of 4KiB.
+const PARTITION_GRANULARITY_BYTES: u64 = 4096;
+
 lazy_static! {
     pub static ref GLOBAL_SERVICE: Strong<dyn IVirtualizationServiceInternal> =
         wait_for_interface(BINDER_SERVICE_IDENTIFIER)
@@ -178,7 +189,45 @@
         partition_type: PartitionType,
     ) -> binder::Result<()> {
         check_manage_access()?;
-        init_writable_partition(image_fd, size_bytes, partition_type)
+        let size_bytes = size_bytes.try_into().map_err(|e| {
+            Status::new_exception_str(
+                ExceptionCode::ILLEGAL_ARGUMENT,
+                Some(format!("Invalid size {}: {:?}", size_bytes, e)),
+            )
+        })?;
+        let size_bytes = round_up(size_bytes, PARTITION_GRANULARITY_BYTES);
+        let image = clone_file(image_fd)?;
+        // initialize the file. Any data in the file will be erased.
+        image.set_len(0).map_err(|e| {
+            Status::new_service_specific_error_str(
+                -1,
+                Some(format!("Failed to reset a file: {:?}", e)),
+            )
+        })?;
+        let mut part = QcowFile::new(image, size_bytes).map_err(|e| {
+            Status::new_service_specific_error_str(
+                -1,
+                Some(format!("Failed to create QCOW2 image: {:?}", e)),
+            )
+        })?;
+
+        match partition_type {
+            PartitionType::RAW => Ok(()),
+            PartitionType::ANDROID_VM_INSTANCE => format_as_android_vm_instance(&mut part),
+            PartitionType::ENCRYPTEDSTORE => format_as_encryptedstore(&mut part),
+            _ => Err(Error::new(
+                ErrorKind::Unsupported,
+                format!("Unsupported partition type {:?}", partition_type),
+            )),
+        }
+        .map_err(|e| {
+            Status::new_service_specific_error_str(
+                -1,
+                Some(format!("Failed to initialize partition as {:?}: {:?}", partition_type, e)),
+            )
+        })?;
+
+        Ok(())
     }
 
     /// Creates or update the idsig file by digesting the input APK file.
@@ -435,6 +484,26 @@
     Ok(())
 }
 
+fn format_as_android_vm_instance(part: &mut dyn Write) -> std::io::Result<()> {
+    part.write_all(ANDROID_VM_INSTANCE_MAGIC.as_bytes())?;
+    part.write_all(&ANDROID_VM_INSTANCE_VERSION.to_le_bytes())?;
+    part.flush()
+}
+
+fn format_as_encryptedstore(part: &mut dyn Write) -> std::io::Result<()> {
+    part.write_all(UNFORMATTED_STORAGE_MAGIC.as_bytes())?;
+    part.flush()
+}
+
+fn round_up(input: u64, granularity: u64) -> u64 {
+    if granularity == 0 {
+        return input;
+    }
+    // If the input is absurdly large we round down instead of up; it's going to fail anyway.
+    let result = input.checked_add(granularity - 1).unwrap_or(input);
+    (result / granularity) * granularity
+}
+
 /// Given the configuration for a disk image, assembles the `DiskFile` to pass to crosvm.
 ///
 /// This may involve assembling a composite disk from a set of partition images.
@@ -886,6 +955,16 @@
     }
 }
 
+/// Converts a `&ParcelFileDescriptor` to a `File` by cloning the file.
+pub fn clone_file(file: &ParcelFileDescriptor) -> Result<File, Status> {
+    file.as_ref().try_clone().map_err(|e| {
+        Status::new_exception_str(
+            ExceptionCode::BAD_PARCELABLE,
+            Some(format!("Failed to clone File from ParcelFileDescriptor: {:?}", e)),
+        )
+    })
+}
+
 /// Converts an `&Option<ParcelFileDescriptor>` to an `Option<File>` by cloning the file.
 fn maybe_clone_file(file: &Option<ParcelFileDescriptor>) -> Result<Option<File>, Status> {
     file.as_ref().map(clone_file).transpose()
diff --git a/virtualizationmanager/src/atom.rs b/virtualizationmanager/src/atom.rs
index 5118a8d..d6eb141 100644
--- a/virtualizationmanager/src/atom.rs
+++ b/virtualizationmanager/src/atom.rs
@@ -14,7 +14,7 @@
 
 //! Functions for creating and collecting atoms.
 
-use crate::aidl::GLOBAL_SERVICE;
+use crate::aidl::{clone_file, GLOBAL_SERVICE};
 use crate::crosvm::VmMetric;
 use crate::get_calling_uid;
 use android_system_virtualizationcommon::aidl::android::system::virtualizationcommon::DeathReason::DeathReason;
@@ -37,7 +37,6 @@
 use statslog_virtualization_rust::vm_creation_requested;
 use std::thread;
 use std::time::{Duration, SystemTime};
-use vsutil::clone_file;
 use zip::ZipArchive;
 
 const INVALID_NUM_CPUS: i32 = -1;