Hi Faisal,
Some time the IOS get corrupted or deleted from flash because of some mistake or problem and switch do not boot properly.
The CISCO switch boot in bootloader mode in such case and shows "switch:" prompt .
following are steps to load new IOS in such case.
1. Connect to the switch using hyperterminal at 9600 or 115200 baud, 80N 1.
2. enter "flash_init" in order to initialize the filesystem.
3. enter "copy xmodem: flash:" to ask the switch to accept a file by xmodem, and put the file in flash:.
4. In Hyperterminal click on Transfer mein >> Send File.... Make sure the protocol is XModem and give the path/location of the IOS file which you have on your local machine. and click on "Send" button.
You can download IOS from CISCO site if you have cisco login details. Or if you have backup of IOS on local machine.
I think You have new IOS on flash:so you can go haead from here:
5. Once sending file complete issue command "Boot flash:>" .
if the baud speed is 9600 it will take 2 hours or more to complete transfer so it is recommended to change baud to 115200 before beginning the process.
If the baud is set to 9600 and you want to change it then connect hyperterminal at 9600 and enter command "set BAUD 115200"
close the hyperterminal and re-connect at 115200 and start the above process.
Regards
Please rate if it helps.
