diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index e485e4f..822ba43 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -383,6 +383,8 @@
 	BuildImagePropFile android.Path
 	// Paths to all the tools referenced inside of the build image property file.
 	BuildImagePropFileDeps android.Paths
+	// Packaging specs to be installed on the system_other image, for the initial boot's dexpreopt.
+	SpecsForSystemOther map[string]android.PackagingSpec
 }
 
 var FilesystemProvider = blueprint.NewProvider[FilesystemInfo]()
@@ -524,6 +526,7 @@
 		ModuleName:             ctx.ModuleName(),
 		BuildImagePropFile:     buildImagePropFile,
 		BuildImagePropFileDeps: buildImagePropFileDeps,
+		SpecsForSystemOther:    f.systemOtherFiles(ctx),
 	}
 
 	android.SetProvider(ctx, FilesystemProvider, fsInfo)
@@ -1070,8 +1073,21 @@
 // Note that "apex" module installs its contents to "apex"(fake partition) as well
 // for symbol lookup by imitating "activated" paths.
 func (f *filesystem) gatherFilteredPackagingSpecs(ctx android.ModuleContext) map[string]android.PackagingSpec {
-	specs := f.PackagingBase.GatherPackagingSpecsWithFilterAndModifier(ctx, f.filesystemBuilder.FilterPackagingSpec, f.filesystemBuilder.ModifyPackagingSpec)
-	return specs
+	return f.PackagingBase.GatherPackagingSpecsWithFilterAndModifier(ctx, f.filesystemBuilder.FilterPackagingSpec, f.filesystemBuilder.ModifyPackagingSpec)
+}
+
+// Dexpreopt files are installed to system_other. Collect the packaingSpecs for the dexpreopt files
+// from this partition to export to the system_other partition later.
+func (f *filesystem) systemOtherFiles(ctx android.ModuleContext) map[string]android.PackagingSpec {
+	filter := func(spec android.PackagingSpec) bool {
+		// For some reason system_other packaging specs don't set the partition field.
+		return strings.HasPrefix(spec.RelPathInPackage(), "system_other/")
+	}
+	modifier := func(spec *android.PackagingSpec) {
+		spec.SetRelPathInPackage(strings.TrimPrefix(spec.RelPathInPackage(), "system_other/"))
+		spec.SetPartition("system_other")
+	}
+	return f.PackagingBase.GatherPackagingSpecsWithFilterAndModifier(ctx, filter, modifier)
 }
 
 func sha1sum(values []string) string {