Switch 2960X initial failed

[Trung Minh]

Hi all,

i have a switch 2960X with stand alone.

When i turn on it is showing strange characters such as:

▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒G▒>▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒g▒33ofs▒{ll▒▒▒q▒▒▒�▒sΏ▒▒▒▒▒▒▒·▒▒▒▒▒▒▒▒▒▒·▒▒p▒▒▒▒▒▒▒▒▒▒o▒▒▒▒▒▒Þ▒▒▒▒▒▒▒▒▒▒▒7▒f▒▒▒▒

After that it is stopped, then i have to press enter or space that cursor can continue but still cannot boot.

Any help is appreciated,

Thanks,

[Seb Rupik · Accepted solution]

Hi there,

Have you tried changing the baud rate of your terminal session? 9600 and 115200 bps are the most common ones to see in use.

cheers,

Seb.

[Trung Minh]

Hi Seb,

Seem .bin file crash so i upload to new file and now running well.

But at loading how it is showing error load the old bin, how to delete this message?

Loading "flash:/c2960x-universalk9-mz.152-2.E7/c2960x-universalk9-mz.152-2.E7.bin"...flash:/c2960x-universalk9-mz.152-2.E7/c2960x-universalk9-mz.152-2.E7.bin: no such file or directory

Error loading "flash:/c2960x-universalk9-mz.152-2.E7/c2960x-universalk9-mz.152-2.E7.bin"

Interrupt within 5 seconds to abort boot process.
Loading "flash:/c2960x-universalk9-mz.152-4.E8.bin"...Verifying image flash:/c2960x-universalk9-mz.152-4.E8.bin....................................................................................................................................................................................................................................................................................................................................................................................Image passed digital signature verification
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Any advise is appreciated,

Thanks,

[Deepak Kumar · Accepted solution]

Hi,

It seems that the switch has two boot image entries. Check the "show boot" command output and delete the entry which is matching to failed ISO version 152.2.E7.

no boot system flash:/c2960x-universalk9-mz.152-2.E7/c2960x-universalk9-mz.152-2.E7.bin

[Seb Rupik]

Hi there,

Your config is specifying the old image, which is why the first boot attempt fails. The bootloader then finds your new image in the flash root and loads that one.

As @Deepak Kumar correctly points out, you need to remove the old boot statement. You should also add a new boot statement for the new image:

!
boot system flash:/c2960x-universalk9-mz.152-4.E8.bin
!

cheers,

Seb.