I am doing a demonstration in the virtual machine. I hope you can use it as needed.
1. Prepare the tool
Open http://adelie.polymtl.ca/releases/x86/current/installcd/
Find the ISO file to download. Because the file name is changed due to version changes, only the downloaded directory location is provided.
2. Directly engrave the ISO file, but do not engrave the disk or do not have a burner.
3. Shut down Ros and start it with the engraved disk. Wait for the livecd root to appear #
Start to enter the command
We now see three hda hda1 hda2
Here, we will briefly describe that the 2.8 series of routeros only have hda1 and do not have hda2. If it is 2.8, You need to mount hda1 for modification. If it is 2.9 or 3.0, You need to mount hda2, if it is 3.0, if you use a SATA disk, it should be shown that sda1 sda2, 2.9 series and 3.0 series are divided into two areas for the hard disk, the previous one is boot and the next one is/. You only need to operate /.
There may also be others here, but they are basically in this possibility.
Hda2 hdb2 hdc2 hdd2 sda2 sdb2 sdc2 sdd2
If you are not sure about this, Google it yourself.
Then attach
Then we delete the file.
OK. Now you can restart the instance, change it to hard drive, and then take the disc away.
Now you can use the admin user in ROS, and enter with a blank password. All the original configurations remain unchanged. The only change is that the admin password is cleared.
Below is a simple recording
Routerosrestores adminas an empty password. rar