Ensure the virtual CD-ROM drive is connected to an IDE controller , not SATA or SCSI. 2. Map ISO to Virtual IDE
In VMware/VirtualBox, the IDE controller is missing, or the image is connected via SCSI. Troubleshooting & Solutions 1. Fix for Physical PC Installations (USB)
Use the console cable (Serial) to watch the boot logs. If you see "I/O Error," the internal NAND is likely dead. Summary Checklist Use a high-quality Ethernet cable. Turn off all other Network Adapters (Wi-Fi, VPNs). fatal error no cd rom found mikrotik full
Before applying physical installation alternatives, alter the low-level firmware settings on the target computer hardware to accept legacy storage allocations. "FATAL ERROR: no CD-ROM found" during installation
Ensure your virtual CD-ROM drive is attached to an IDE Controller , not SATA or SCSI. RouterOS looks for /dev/hda or /dev/cdrom via IDE. Ensure the virtual CD-ROM drive is connected to
Use the Netinstall tool to push the RouterOS package to the machine. This allows you to install the "Full" version without needing a physical optical drive. Summary Checklist for a Successful Install
Booting from a USB 3.0 port or using a USB 3.0 drive can lead to driver detection failures during the handoff from the initial bootloader to the installer environment. Troubleshooting & Solutions 1
Change the storage controller setting in your BIOS to or "Legacy Mode" .
The "FATAL ERROR: no CD-ROM found" message during a MikroTik RouterOS installation can be incredibly frustrating. This issue primarily occurs when RouterOS expects to find a physical CD-ROM drive but cannot locate one. It commonly surfaces on standard x86 PC hardware used as a router or when attempting to install RouterOS from a USB flash drive. This comprehensive guide will explain what causes this error and provide detailed methods to resolve it.
Burn the ISO to a CD-R and boot from a physical optical drive. This is rarely practical for modern servers but confirms the issue is indeed the absence of a CD-ROM.