Fatal Error No Cd Rom Found Mikrotik Full
Date: October 26, 2023 Subject: Troubleshooting "Fatal Error: No CD-ROM Found" during RouterOS Installation Severity: High (Prevents OS Installation)
After resolving the fatal error, you need to configure your MikroTik.
The CHR version is 100% feature identical to the ISO "Full" version. It includes all routing, firewall, VPN, and wireless packages (if you have wireless hardware supported via PCI passthrough).
For VirtualBox, VMware, or KVM:
The error is almost exclusively caused by one of three scenarios:
If you must use the legacy ISO (e.g., for a specific old device), try these three fixes in order.
The MikroTik installer (based on a minimal Linux kernel) is looking for a bootable medium labeled as a CD-ROM drive – specifically, an IDE or SATA optical drive (/dev/cdrom or /dev/sr0). If the installer cannot detect a CD-ROM drive with the RouterOS installation media, it aborts with this fatal error. fatal error no cd rom found mikrotik full
Crucially, this happens even if you are booting from a USB flash drive, a virtual CD-ROM in a hypervisor, or a PXE network boot. The installer expects the installation source to be a physical CD-ROM drive.
If you are trying to install the "full" version, the official, error-proof method is Netinstall. This bypasses the CD-ROM requirement entirely.
What is Netinstall?
Netinstall is a utility (Windows/Linux) that boots MikroTik over the network (Ethernet) without any local media. The CHR version is 100% feature identical to
Steps:
Verdict: If you see the "fatal error" more than once, abandon ISO boot and switch to Netinstall. It is faster and more reliable for full installations.
This guide covers causes, diagnostics, and step‑by‑step fixes for the “Fatal error: No CD-ROM found” message encountered when installing MikroTik RouterOS (typically from a CD, USB, or PXE). It assumes you’re installing RouterOS on x86/amd64 hardware or a virtual machine and that the installer fails early with that error. Verdict: If you see the "fatal error" more