The virtual machine is configured to use SATA or NVMe instead of IDE.
The installer lacks native drivers for certain SATA controllers or USB chipsets.
The "no cd-rom found" message is somewhat misleading. It does not always mean the system is looking for a physical, optical CD-ROM disc. Instead, it indicates that the The most common root causes include: fatal error no cd rom found mikrotik full
Sometimes the installer boots fine but throws the error because it fails to read the destination Hard Drive or SSD due to an existing Windows, Linux, or GPT partition structure.
Thus, the error is most prevalent among users who want the complete RouterOS experience on old x86 hardware. The virtual machine is configured to use SATA
In Rufus, ensure the Partition scheme is set to MBR and the Target system is set to BIOS (or UEFI-CSM) .
When SATA controllers are set to AHCI mode in BIOS, RouterOS may not recognize the CD-ROM drive. It does not always mean the system is
Warning: This violates MikroTik's license agreement and is not recommended for production systems. It is purely an academic exercise.