Community discussions

MikroTik App
  4. Other topics
  5. RouterBOARD hardware

Cannot netinstall a CRS125 due to reboot loop

Post Reply
 
thantoldo
just joined
Topic Author
Posts: 22
Joined: Tue Apr 10, 2012 10:08 pm

Cannot netinstall a CRS125 due to reboot loop

Wed Jan 13, 2016 12:31 pm

Hi all!

I own a CRS125 which I normally reseted using the reset button procedure described here http://wiki.mikrotik.com/wiki/Manual:Reset. After the reset, the CRS went into a reboot loop every 6 sec.

Plugging a serial console reveals the following:
Code: Select all
CRS125-24G-1S-2HnD

CPU frequency: 600 MHz
 Memory speed: 200 MHz
  Memory size: 128 MiB
    NAND size: 128 MiB

loading kernel from nand... kernel not found

RouterBOOT booter 3.22

CRS125-24G-1S-2HnD

CPU frequency: 600 MHz
 Memory speed: 200 MHz
  Memory size: 128 MiB
    NAND size: 128 MiB

loading kernel from nand... kernel not found

RouterBOOT booter 3.22

CRS125-24G-1S-2HnD

CPU frequency: 600 MHz
 Memory speed: 200 MHz
  Memory size: 128 MiB
    NAND size: 128 MiB

loading kernel from nand... kernel not found
and the loop continues forever..

What I get from the above is that it doesn't find a local kernel, but it doesn't look at the network in order to netinstall.


Any help?

Thanos
Top
 
User avatar
PaulsMT
MikroTik Support
MikroTik Support
Posts: 282
Joined: Tue Feb 10, 2015 3:21 pm

Re: Cannot netinstall a CRS125 due to reboot loop

Thu Jan 14, 2016 12:59 pm

First please try to boot the board with backup BIOS:

Enter BIOS settings while board boots (Press any key within 2 seconds to enter setup), and press:

b - booter options

2 - force backup-booter loading

And exit bios (x - exit setup)

If the board is able to find kernel, log in and update your BIOS to the latest version:
/system routerboard upgrade


If nothing changes, then only option will be to reinstall this device with Netinstall:
http://wiki.mikrotik.com/wiki/Manual:Netinstall
Top
 
User avatar
G2Dolphin
Member Candidate
Member Candidate
Posts: 164
Joined: Sun May 17, 2015 6:03 pm
Location: Moscow, Russia

Re: Cannot netinstall a CRS125 due to reboot loop

Thu Jan 14, 2016 3:11 pm

If nothing changes, then only option will be to reinstall this device with Netinstall:
http://wiki.mikrotik.com/wiki/Manual:Netinstall
Topic starts with "Cannot netinstall"...
Top
 
thantoldo
just joined
Topic Author
Posts: 22
Joined: Tue Apr 10, 2012 10:08 pm

Re: Cannot netinstall a CRS125 due to reboot loop

Fri Jan 15, 2016 12:42 am

PaulMT thank you for your reply.

Just to clarify things, shouldn't it display anything like 'Press any key' or counting down to zero till it continues with booting? It displays none of these, just the loop that I posted before.

G2Dolphin, Paul, I will try again tomorrow making sure to press any key during boot, although I'm quite sure that I have already tried without any effect.

I will also compare normal booting from another board.

Thank you guys.

Regards,

Thanos
Top
 
thantoldo
just joined
Topic Author
Posts: 22
Joined: Tue Apr 10, 2012 10:08 pm

Re: Cannot netinstall a CRS125 due to reboot loop

Fri Jan 15, 2016 10:06 pm

Well, the good news is that I succeeded with netinstall :)

The 2 second count down was displayed only when the reset button was pressed. It seems that I missed it with hyperterminal and I hit it when I used putty instead.

The "RouterOS cleanup..." section appeared only during the full rese procedure (power jack off, press reset and insert power). Then the press any key message appeared!
Code: Select all
RouterBOOT booter 3.22

CRS125-24G-1S-2HnD

CPU frequency: 600 MHz
 Memory speed: 200 MHz
  Memory size: 128 MiB
    NAND size: 128 MiB

RouterOS cleanup...
writing settings to flash... OK

RouterBOOT backup booter 3.22

CRS125-24G-1S-2HnD

CPU frequency: 600 MHz
 Memory speed: 200 MHz
  Memory size: 128 MiB
    NAND size: 128 MiB

Press any key within 2 seconds to enter setup
Ethernet link absent...
trying bootp protocol................................. failed
kernel loading failed
..
trying bootp protocol................................. failed
kernel loading failed
Then after opening netinstall program
Code: Select all
loading kernel from nand... kernel not found
trying bootp protocol..................... OK
Got IP address: x.x.x.x
resolved mac address xx:xx:xx:xx:xx:xx
*transfer started ....*...................... transfer ok, time=6.29s
setting up elf image... OK
jumping to kernel code
memSize=126828
flashSize=133955584
Welcome to MikroTik Router Software remote installation
Press Ctrl-Alt-Delete to abort
and the procedure continued and completed successfully.

PaulsMT really thank you for your help.


Regards,

Thanos
Top
Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 52 guests
  4. Other topics
  5. RouterBOARD hardware