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Setting up 3945 boot system file

Hello,

I am upgrading 3945 router. Little confused to set the boot system file.

Output from show version

System image file is "flash0:c3900e-universalk9-mz.SPA.153-1.T1.bin"
Last reload type: Normal Reload
Last reload reason: power-on

R1(config)#boot system ?
  WORD       TFTP filename or URL
  flash      Boot from flash memory
  flash0     Boot from flash0
  flash1     Boot from flash1
  ftp        Boot from a server via ftp
  mop        Boot from a Decnet MOP server
  rcp        Boot from a server via rcp
  rom        Boot from rom
  tftp       Boot from a tftp server
  usbflash0  Boot from usbflash0
  usbflash1  Boot from usbflash1

R1#dir
Directory of flash0:/

    1  -rw-    93157620   Nov 4 2013 21:03:04 -05:00  c3900e-universalk9-mz.SPA.153-1.T1.bin
    2  -rw-        3064   Nov 4 2013 21:13:52 -05:00  cpconfig-39xx.cfg
    3  drw-           0   Nov 4 2013 21:14:22 -05:00  ccpexp
  239  -rw-        2464   Nov 4 2013 21:16:08 -05:00  home.shtml
  240  -rw-   100829316  Aug 15 2014 20:32:18 -04:00  c3900e-universalk9-mz.SPA.154-2.T1.bin

 

Which of the below command is right to set up boot variable?

R1(config)#boot system ?
  WORD       TFTP filename or URL
  flash      Boot from flash memory
  flash0     Boot from flash0

R1(config)#boot system flash0:c3900e-universalk9-mz.SPA.154-2.T1.bin

Or

R1(config)#boot system flash0 ?
  WORD  flash0 system image filename

R1(config)#boot system flash 0 flash0:c3900e-universalk9-mz.SPA.154-2.T1.bin

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

2900/3900 ISR G2 has two CF

2900/3900 ISR G2 has two CF slots.  So for the sake of accuracy, I'd go for this: 

 

config t

boot system flash flash0:c3900e-universalk9-mz.SPA.154-2.T1.bin

end

wr

6 REPLIES
Hall of Fame Super Gold

2900/3900 ISR G2 has two CF

2900/3900 ISR G2 has two CF slots.  So for the sake of accuracy, I'd go for this: 

 

config t

boot system flash flash0:c3900e-universalk9-mz.SPA.154-2.T1.bin

end

wr

Hall of Fame Super Gold

Thanks for taking the time to

Thanks for taking the time to rate our posts.  :)

New Member

This discussion has been

This discussion has been reposted from Additional Communities to the WAN, Routing and Switching community.

Hi Leo,What will be the

Hi Leo,

What will be the difference If I don't use "flash" keyword before "flash0:c3900e-universalk9-mz.SPA.154-2.T1.bin "

 

Thanks/Regards

Hall of Fame Super Gold

If you don't use the location

If you don't use the location, i. e.  "flash0:" or "flash1:", the router will not know where to boot and might go into ROMmon. 

 

If you don't want to use the "location" then don't put the second CF card.  

New Member

Router#conf tRouter(config)

Router#conf t

Router(config)#boot system flash c3900e-universalk9-mz.SPA.154-2.T1.bin

Router (config)# do wr

Router (config)#do reload

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