# Fixed: Umbrel 1.7+ not recognizing apps/data on second SSD drive after update

**URL:** <https://community.umbrel.com/t/fixed-umbrel-1-7-not-recognizing-apps-data-on-second-ssd-drive-after-update/25147>\
**Category:** Support and Troubleshooting\
**Created:** [May 28, 2026, 9:05pm UTC](https://community.umbrel.com/t/fixed-umbrel-1-7-not-recognizing-apps-data-on-second-ssd-drive-after-update/25147 "2026-05-28T21:05:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dvdribeiro](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@dvdribeiro](https://community.umbrel.com/u/dvdribeiro)\
**Post date:** [May 28, 2026, 9:05pm UTC](https://community.umbrel.com/t/fixed-umbrel-1-7-not-recognizing-apps-data-on-second-ssd-drive-after-update/25147/1 "2026-05-28T21:05:38Z")

</div>

Hi everyone,

I wanted to share a problem I recently faced and how I managed to fix it, in case anyone else goes through the same.

**My Setup:**

- Umbrel server with two drives: A 256GB drive for the OS and a 2TB external SSD where all my old Umbrel 1.5 data and apps (Bitcoin Core, Electrs, Lightning) were stored.

**The Problem:** After updating to umbrelOS 1.7.3 and restoring my user backup, the system booted up as a fresh install. It only recognized the 256GB drive and wanted to download the entire blockchain from scratch. Because umbrelOS 1.7+ uses an immutable file system, any changes to `/etc/fstab` are wiped on every reboot, meaning the system couldn’t automatically see my 2TB SSD data anymore.

**The Solution:** The fix is to use the official **`custom-hooks`** feature. This allows you to run a script before Umbrel starts, and it survives reboots.

Here is the step-by-step to fix it via SSH:

1. Create the custom-hooks directory: `sudo mkdir -p /home/umbrel/umbrel/custom-hooks`

2. Create and edit the `pre-start` script: `sudo nano /home/umbrel/umbrel/custom-hooks/pre-start`

3. Paste the following configuration inside the file (make sure to replace `/dev/sdb1` with your actual second drive ID):

Bash

```auto
#!/bin/bash

# 1. Mount the second drive
mkdir -p /mnt/2nddrive
mount /dev/sdb1 /mnt/2nddrive

# 2. Ensure the Umbrel destination folder exists
mkdir -p /home/umbrel/umbrel/app-data

# 3. Bind mount the entire app-data from the SSD to the new Umbrel structure
mount --bind /mnt/2nddrive/umbrel/umbrel/app-data /home/umbrel/umbrel/app-data

```

_(Save and exit the editor)_

1. Make the script executable, fix permissions, and reboot:

Bash

```auto
sudo chmod +x /home/umbrel/umbrel/custom-hooks/pre-start
sudo chown -R 1000:1000 /mnt/2nddrive/umbrel/umbrel/app-data
sudo reboot

```

After the reboot, the system successfully pointed back to my 2TB SSD, and all my apps (Bitcoin, Electrs, Lightning) resumed working perfectly without redownloading anything!

Hope this helps anyone running a dual-drive setup on the new umbrelOS.