cisco 4506e switch in romman mode

[yuvaraj.karvekar11]

cisco 4506e powercycled and after power up shows " in rommon

rommon 27 >boot
 File has bad file magic number: 0x0. Is it a valid file?
 boot: can not load "bootflash:"
rommon 28 >

[Charles Hill]

Bad file magic number is usually an indication of a corrupt file.  

Is there more than one iOS in the flash?

if so, the first image listed is probably corrupt.  Try booting from second image.

boot command boots the first image in flash memory.

[yuvaraj.karvekar11]

Thank you all,

 that is correct,the file looks corrupted,There is flash memory inserted

i tried with boot bootflash: <file-name> ? and switch came up.

Thank you again for helping

[Charles Hill]

Your welcome.

Glad we could help.

Please rate helpful posts.

Thanks.

[InayathUlla Sharieff]

"File has bad file magic number".

This error typically indicates the file is corrupted, I suggest to download it again from cisco.com and re-upload on the switch.

Hth

Regards

Inayath