Reinstalling the Operating System
Reinstalling the Operating System (VMmanager 6)
Reinstalling the operating system allows you to reset your VPS or Dedicated Server to a clean state. UP-NETWORK uses VMmanager 6, which provides a safe, automated OS reinstallation workflow.
This guide explains how to access the reinstall interface, choose an OS template, configure SSH keys, and start the reinstall process.
1. Before You Start
✔ Reinstalling the OS will:
Delete all data on the server
reset all partitions & network configs
reinstall the selected OS template
generate a new root/admin password (if applicable)
❗ Make sure to:
Backup your data before reinstalling
Remove encryption or custom bootloaders
Save your IPv6 configuration if you use it
2. Accessing the Reinstall Page
VPS
Access via VPS dashboard
Go to your dashboard: https://vps.upn.li
Select your VPS, open the left menu, and click Reinstall OS.
Dedicated Server
3. Choosing an OS Template
VMmanager 6 displays all OS templates available for your service.
Available categories may include:
Linux: Debian, Ubuntu, AlmaLinux, Rocky, CentOS Stream
Windows Server
BSD (FreeBSD, pfSense, etc.)
Custom ISO (if enabled by support)
Cloud-Init enabled images
Each OS template comes with:
Version (example: Ubuntu 22.04 LTS)
Architecture (x86_64)
Cloud-Init support (if included)
Optional SSH key injection
Choose the template you want to install.
4. Setting Up Access Credentials
According to VMmanager 6 standards:
A. Using a root/admin password
VMmanager can generate a new password automatically.
Check “Set password”
Enter your desired password
Leave blank to auto-generate (the new password will be shown after installation)
B. Using an SSH Key (recommended)
VMmanager 6 supports SSH key injection via Cloud-Init.
Tick “Use SSH key”
Paste your public key (format: ssh-ed25519 ... or ssh-rsa ...)
VMmanager will add it automatically to /root/.ssh/authorized_keys
This is the most secure method.
5. Optional — Custom Disk Partitioning
Depending on the OS template, VMmanager 6 may allow:
Automatic partitioning
Custom disk layout
LVM or ext4 selection
Encryption (if template supports it)
UP-NETWORK defaults to:
ext4
Automatic partitioning
Recommended layout for SSD/NVMe
6. Starting the Reinstallation
When all settings are ready:
Click “Reinstall”
Confirm — VMmanager will ask to confirm data loss.
The server will reboot into ISO / deployment mode
Installation begins automatically
7. Installation Duration
Typical install times:
Debian/Ubuntu
30–60 seconds
AlmaLinux/Rocky
1–2 minutes
Windows Server
5–10 minutes
Custom ISO
depends on installer
The VMmanager panel will show the installation progress and status.
8. Retrieving Your New Login Credentials
After installation, VMmanager displays:
The new root/admin password (if password method chosen)
The server's IPv4
The server’s IPv6 (if enabled)
Access instructions
Example VMmanager output:
9. After Installation — Recommended Actions
✔ Update system packages
✔ Reconfigure IPv6 if necessary
(see the IPv6 tutorial)
✔ Reapply your firewall rules
UP-NETWORK recommends:
UFW (Ubuntu)
Firewalld (RHEL)
Windows Firewall for Windows
✔ Reimport SSH keys
If you did not use Cloud-Init SSH injection.
10. Troubleshooting
Summary
All reinstallations are done through VMmanager 6
Choose your OS → set password/SSH → reinstall
The server reboots and wipes all data
New login credentials are displayed after installation
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