Cisco 3750X won't boot

Posted on 2011-10-31
Last Modified: 2012-05-12
I have a new 3750X which wouldn't add to an existing stack - turns out it can't load it's flash file:

switch: boot
Loading "flash:/c3750e-universalk9-mz.122-53.SE2/c3750e-universalk9-mz.122-53.SE2.bin"...flash:/c3750
e-universalk9-mz.122-53.SE2/c3750e-universalk9-mz.122-53.SE2.bin: no such file or directory

Error loading "flash:/c3750e-universalk9-mz.122-53.SE2/c3750e-universalk9-mz.122-53.SE2.bin"

Interrupt within 5 seconds to abort boot process.
Boot process failed...

switch: version
C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(53r)SE1, RELEASE SOFTWARE (fc1)
Compiled Wed 03-Mar-10 19:48 by nachen


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I've taken the .bin file from an existing c3750x and uploaded it to a tftp server. The faulty switch is at the "switch:" prompt

I've done the following:

switch: copy tftp://ip_address/c3750e-universalk9-mz.122-55.SE3.bin c3750e-universalk9-mz.122-55.SE3.
Unknown cmd: copy

but it errors as you can see. How can I get this IOS onto the switch?

Question by:gmbaxter
    LVL 6

    Expert Comment

    I have several 3750e's.  Is the 3750e-uni... the appropriate flash for the 3750x?
    Well, Its looking for it on the flash so remove the flash and put it in a working one.  Then tftp the file to the flash to the location specified in the failure message.  Return the flash to the one failing to boot and boot it.
    LVL 11

    Accepted Solution

    I'm just working my way through an xmodem transfer:

    The dir flash: appears to have very little in it

    Will update with progress tomorrow.
    LVL 12

    Expert Comment

    Don't waste your time with XModem.

    You are in luck. The 3750 can do TFTP in rommon

    If you already have the IOS on tftp, all you need to do is follow the steps in the article above.
    LVL 11

    Author Comment

    Thanks for that... I found that through google but it didn't work.
    LVL 12

    Expert Comment

    what happened that it didn't work?
    LVL 11

    Author Closing Comment

    XModem transfer, although slow (7 hours) worked.
    LVL 11

    Author Comment

    Unknown command copy

    Was the error, despite the command being listed under help. Odd.

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