RouterBOARD 750 Series User's Manual
5
An alternative configuration option is the MikroTik Winbox utility (Windows only). Winbox can be used to
connect to the default IP address of 192.168.88.1 with the username admin and no password.
In case you wish to boot the device from network, for example to use MikroTik Netinstall, hold the RESET
button of the device when starting it until the LED light turns off, and the device will start to look for Netinstall
servers. In case IP connection is not available, Winbox can also be used to connect to the MAC address of the
device. More information here: http://wiki.mikrotik.com/wiki/First_time_startup
Onboard NAND Storage Device
The RouterBOARD may be started from the onboard NAND storage chip. As there is no partition table on the
device, the boot loader assumes the first 4MiB form a YAFFS filesystem, and executes the file called “kernel”
stored in the root directory on that partition. It is possible to partition the rest of the medium by patching the
kernel source.
Booting from network
You can boot the RouterBOARD device from Network with the NETINSTALL software, if your RouterOS
software needs to be reinstalled or reset. Hold the Reset button, power on the device, and release until the
LED light stops flashing. See „Buttons and Jumpers” below for details. The Netinstall program can be
downloaded from www.mikrotik.com download section.
Network boot works similarly to PXE or EtherBoot protocol, and allows you to the device from an executable
image stored on a TFTP server. It uses BOOTP or DHCP (configurable in boot loader) protocol to get a valid IP
address, and TFTP protocol to download an executable (ELF) kernel image combined with the initial RAM disk
(inserted as an ELF section) to boot from (the TFTP server's IP address and the image name must be sent by the
BOOTP/DHCP server).
To boot the RouterBOARD computer from Ethernet network you need the following:
An ELF kernel image for the loader to boot from (you can embed the kernel parameters and initrd image
as ELF sections called kernparm and initrd respectively)
A TFTP server which to download the image from
A BOOTP/DHCP server (may be installed on the same machine as the TFTP server) to give an IP address,
TFTP server address and boot image name
Operating System Support
MikroTik RouterOS starting from version v5 is fully compatible with the device. If your device is preinstalled
with an earlier RouterOS release, please upgrade RouterOS to v5.8 or newer.
Buttons and Jumpers
RouterOS reset jumper hole (on the bottom of case) – resets RouterOS software to defaults. Must
short circuit the metallic sides of the hole with a screwdriver and boot the device. Hold screwdriver in
place until RouterOS configuration is cleared.
RouterBOOT reset button (RES, front panel) has two functions:
o Hold this button during boot time until LED light starts flashing, release the button to reset
RouterOS configuration (same result as with RouterOS reset hole)
(14 pages)
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