I can provide custom step-by-step instructions based on your deployment environment. Share public link
Note: Always remember to unplug your installation USB drive or unmount the virtual ISO file before rebooting, otherwise the system may loop back into the installer script.
Boot your target hardware into Netinstall mode. For RouterBOARDs, hold the reset button while powering it on until the device appears in the Netinstall interface. For generic x86 PCs, use a temporary bootable USB made with a tool like Rufus to force a network boot (PXE).
A: Directly booting a USB drive with a simple ISO copy will not work and triggers this error. Use the IMG write method or NetInstall as described above. fatal error no cd rom found mikrotik full
The virtual machine is configured to use SATA or NVMe instead of IDE.
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The is a classic roadblock when installing MikroTik RouterOS on x86 bare-metal hardware or older server setups. This error typically interrupts the installation sequence right after the bootloader initializes, leaving administrators unable to format their drives or copy files. I can provide custom step-by-step instructions based on
If you see this error while setting up RouterOS in a virtualized environment, the fix requires changing the virtual hardware configuration. For VMware Workstation / ESXi the MikroTik virtual machine.
If physical BIOS tweaks do not work, or if your modern motherboard completely lacks an IDE legacy mode, stop using the ISO installer. Instead, use MikroTik's official utility. Netinstall pushes the RouterOS files directly over a local network cable, bypassing the need for a CD-ROM drive altogether.
Detach and the CD/DVD drive if it is set as a SATA device. For RouterBOARDs, hold the reset button while powering
The root cause lies in the architecture and driver support of RouterOS. Unlike general-purpose operating systems that include drivers for a wide range of hardware, MikroTik RouterOS has a more focused scope:
This guide assumes you’re dealing with a MikroTik device (RouterBOARD) that shows a boot error like “Fatal error: no cd rom found” or similar during installation/boot and you need a full recovery or reinstall of RouterOS/firmware. Follow steps in order. I assume you want a complete recovery including reinstalling RouterOS and bootloader if needed.
[Rufus Settings] -> Select USB Drive -> Boot Selection: Disk or ISO Image (Select MikroTik ISO) -> Click 'START' -> Pop-up Window: Choose "Write in DD Image mode" (CRITICAL) Steps to Follow Open on your computer. Select your target USB flash drive. Choose the downloaded MikroTik RouterOS ISO file. Click Start .
How to Fix "Fatal Error: No CD-ROM Found" During MikroTik RouterOS Installation