Debian 12 VM Script Does not Prompt for HDD Size

[AT-StephenDetomasi]

✅ Have you read and understood the above guidelines?

Yes.

📜 What is the name of the script you are using?

Debian 12 VM

📂 What was the exact command used to execute the script?

bash -c "$(wget -qLO - https://github.com/community-scripts/ProxmoxVE/raw/main/vm/debian-vm.sh)"

📝 Provide a clear and concise description of the issue.

During the advanced setup, several variable parameters are prompted to the user. Unfortunately, the HDD size is not prompted during the process, and the default 4GB HDD size is forced, which is insufficient for many users.

⚙️ What settings are you using?

• Default Settings
• Advanced Settings

🖥️ Which Linux distribution are you using?

Debian 12

🔄 Steps to reproduce the issue.

Run the command, select advanced options. Option to change HDD size does not appear.

❌ Paste the full error output (if available).

No logs due to missing option.

🖼️ Additional context (optional).

Output from final command:

Using Advanced Settings
Virtual Machine ID: 222
Using Machine Type: q35
Using Disk Cache: None
Using Hostname: sb-debian-01
Using CPU Model: Host
Allocated Cores: 4
Allocated RAM: 1666
Using Bridge: vmbr0
Using MAC Address: 02:E1:F1:6E:38:03
Using Vlan: Default
Using Interface MTU Size: Default
Start VM when completed: yes
Creating a Debian 12 VM using the above advanced settings
 ✓ Using ZFS-S-02 for Storage Location.
 ✓ Virtual Machine ID is 222.
 ✓ https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-nocloud-amd64.qcow2
 ✓ Downloaded debian-12-nocloud-amd64.qcow2
 ✓ Created a Debian 12 VM (sb-debian-01)
 ✓ Started Debian 12 VM
 ✓ Completed Successfully!****

[AT-StephenDetomasi]

I just tried the Ubuntu 24.04 VM as well - it also does not prompt for HDD size. This is less of an issue on LXCs since you can easily extend the storage (after all it is a quota and not a conventional virtual disk), but with VMs you must manually repartition which is sub-optimal.

[oOStroudyOo]

Hello @AT-StephenDetomasi

I'm just looking at this now, what would you recommend as a default disk-size?

Thanks.

[AT-StephenDetomasi]

8GB would be my minimum recommended size, but user choice here is important, as some people may want to install a desktop environment for various reasons. In my situation I want to install a desktop environment and have a disk size of around 25GB. Whilst I could manually resize partitions via a GParted Live environment afterwards, this is a bit of a chore.

The other thing not mentioned is swap, but this is probably less important.

[oOStroudyOo]

I've got something running in my repo at the moment, I assume this is what you're looking for:

The partitions haven't been adjusted, is this something you need?

[AT-StephenDetomasi]

That definitely looks like we're on the right track. That said, typically when a user selects a given disk size as part of an operating system installation on a new system, it should be assumed that the entire disk would be allocated for this. I can't think of a good reason why someone would want it any other way...