Fatal Error No Cd Rom: Found Mikrotik

| Setting | Recommended value | |---------|------------------| | | IDE or Compatible (not AHCI, not RAID) | | Boot Mode | Legacy or Legacy+UEFI (avoid pure UEFI) | | CSM | Enabled | | Secure Boot | Disabled | | Fast Boot | Disabled | | USB Legacy Support | Enabled |

This error occurs when trying to install or boot (typically the CD image or Netinstall mode) on a physical server or PC, and the installer cannot detect any optical drive. However, because MikroTik is usually installed on flash drives, hard disks, or virtual machines , this error often indicates a deeper boot or storage controller issue.

RouterOS’s kernel (especially versions <7.x) expects legacy IDE CD-ROMs. Switching SATA to IDE mode often resolves the error. 3.3. Try Netinstall (Most Reliable Method) Netinstall bypasses the CD-ROM check entirely by booting a small kernel over the network.

legacy_ide=1 all_generic_ide=1 Or to skip CD detection entirely (not always possible):

If none of the above works, consider running on a hypervisor – it eliminates all hardware compatibility issues.

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