diff --git a/src/floppy/disk.ts b/src/floppy/disk.ts
index d085e78..caa20f0 100644
--- a/src/floppy/disk.ts
+++ b/src/floppy/disk.ts
@@ -41,6 +41,7 @@ export interface IAttributes {
 
 export interface IStandardDirEntry {
   type: 'standard-entry'
+  id: string
   name: string
   basename: string
   extension: string
@@ -53,14 +54,17 @@ export interface IStandardDirEntry {
 
 export interface ILongFileNameDirEntry {
   type: 'long-filename-entry'
+  id: string
 }
 
 export interface IFinalDirEntry {
   type: 'final-entry'
+  id: string
 }
 
 export interface IUnusedDirEntry {
   type: 'unused-entry'
+  id: string
 }
 
 export type TDirEntry = IStandardDirEntry | ILongFileNameDirEntry | IFinalDirEntry | IUnusedDirEntry
@@ -304,13 +308,14 @@ function decodeDirectoryEntry(data: DataView, fd: FloppyDisk): TDirEntry | null
 
   const firstByte = data.getUint8(0)
   const attributeByte = data.getUint8(11)
+  const id = crypto.randomUUID()
 
   if (firstByte === 0) {
-    return { type: 'final-entry' }
+    return { type: 'final-entry', id }
   } else if (firstByte === 0xe5) {
-    return { type: 'unused-entry' }
+    return { type: 'unused-entry', id }
   } else if (attributeByte === 0x0f) {
-    return { type: 'long-filename-entry' }
+    return { type: 'long-filename-entry', id }
   } else {
     const asciiDecoder = new TextDecoder('ascii')
     const basename = asciiDecoder
@@ -338,6 +343,7 @@ function decodeDirectoryEntry(data: DataView, fd: FloppyDisk): TDirEntry | null
 
     const entry: IStandardDirEntry = {
       type: 'standard-entry',
+      id,
       name,
       basename,
       extension,