UUP Dump ISO Creator

UUP Dump ISO Creator entry in ProxMenux

What is UUP Dump?

UUP Dump is a community service that lets you download the raw Unified Update Platform (UUP) payloads that Windows Update itself uses to deliver Windows. Those payloads can be assembled back into a standard bootable ISO. It is the way to get:

• The very latest Windows build (including Insider Preview channels).
• A specific historical build that is no longer listed on Microsoft's download page.
• Clean, unmodified files sourced directly from Microsoft's servers.
• The exact combination of editions and languages you want in a single ISO.

Learn more on the UUP Dump project page.

What the script automates

Dependencies

The first thing the script does is check for the tools needed to download UUP payloads and assemble the ISO. Any that are missing are installed with apt-get:

Manual equivalent — if you ever need to install them yourself:

apt-get install curl aria2 cabextract wimtools genisoimage chntpw

Download and conversion

1. Detects the Proxmox ISO storage (via pvesm status -content iso) or falls back to /var/lib/vz/template/iso.
2. Asks for a base folder for temporary files (default /root/uup-temp).
3. Downloads the UUP Dump converter from git.uupdump.net.
4. Parses id, pack and edition out of the URL you paste.
5. Calls https://uupdump.net/get.php?…&aria2=2 to generate an aria2 download list.
6. Downloads every UUP payload into UUPs/ with aria2 (parallel, resumable).
7. Runs convert.sh wim UUPs 1 from the converter to produce the final ISO.
8. Moves the ISO into the Proxmox ISO storage and cleans up temporary files.

Aria2 download flags used

aria2c --no-conf --console-log-level=warn --log-level=info \
  --log=aria2_download.log \
  -x16 -s16 -j5 -c -R \
  -d"$destDir" -i"$tempScript"

• -x16 — up to 16 connections per server.
• -s16 — splits each file into 16 segments.
• -j5 — 5 files downloaded in parallel.
• -c — resumes partial downloads.
• -R — retries on failure.

Typical runtime is around 10 minutes, dominated by your internet link speed and UUP Dump's mirror load.

Step 1 · Get a UUP Dump URL

Before running the script you need a UUP Dump URL that includes the id, pack and edition query parameters. Generate it on uupdump.net:

Step 1

Pick a Windows version

Open the UUP Dump home page and choose the Windows version you want.

UUP Dump main page — pick a Windows version

Step 2

Pick a specific build

Pick the build: latest, Insider Preview channel, or a specific older build still listed.

Pick a specific build

Step 3

Pick a language

Pick the language the ISO should ship with.

Pick a language

Step 4

Pick editions

Pick the editions to bundle into the ISO (Home, Pro, Enterprise, …). You can combine several.

Pick the editions to include

Step 5

Copy the URL

On the final page, copy the URL from the browser address bar. It must contain id=…, pack=… and edition=…. That is the string the script will parse.

Copy the URL from the address bar

Step 2 · Run the creator

With the URL in hand, open ProxMenux and launch the creator:

Step 1

Start UUP Dump ISO Creator

In ProxMenux go to Utilities → UUP Dump ISO Creator. The script checks dependencies and the ISO storage directory before asking for input.

Start UUP Dump ISO Creator from ProxMenux

Step 2

Paste the UUP Dump URL

Paste the URL in the input dialog. The script validates that the three required parameters are present; if any is missing it aborts cleanly.

Paste the URL you copied from uupdump.net

Step 3

Wait for the build to finish

The console shows aria2 progress and then the converter output. When it finishes, the ISO lands in the detected Proxmox ISO storage and is ready to pick from Create VM → System Windows → Install with ISO from UUP Dump.

Build finished — ISO is ready in Proxmox ISO storage