**Locate and load the startup-config file from NVRAM.
To set the boot environment variable to find the IOS image file on a Cisco switch, you use the command boot system flash:<image-filename>. This command specifies the IOS image file to be loaded from the flash memory during the boot process. After entering the command, remember to save the configuration with write memory or copy running-config startup-config to ensure the changes persist after a reboot.
The Simpsons tapped out will not load up on the ios 7.1 because of the bugs.
There is a question floating around that says "when the running-config directs the router to do so"... this is utter rubbish, how can the running-config tell the router to do so when there is no IOS?... no IOS means no running-config. To answer your question about when would the IOS held in ROM be used to boot the router?... when the IOS cannot be found by the Bootstrap it will eventually look in the ROM for it. It will look in the default location in the flash memory, if there is no IOS in the flash, then it will try to locate one from a TFTP server. If it still cant find an IOS then it will look in the ROM for a scaled down version of the IOS and load it from there. I hoep this put an end to the other false answers that are floating around.
Reinstall the IOS image. Recover a lost password
hi, it is basically start up program that is responsible for locating lower hard disk addresses where operating system is stored
Flash memory
In flash memory. This is the equivalent of what, in a PC, would be the hard disk. However, when the router or switch is turned on, a copy of the IOS file is loaded into RAM. This, too, is equivalent to a PC, which needs to load its programs into RAM.
The Flash memory stores the Cisco IOS image.
In the event that the main flash memory were accidentally erased or corrupted (wrong software loaded), you can load a new image by booting into the ROM Monitor and running the appropriate commands.
TFTP.
The Cisco IOS commands allow the user to enter partial Cisco IOS commands. If you start to type in a command it can recognize it and finish the command for you.