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How to Repair 2911 Format Flash Driverar in 3 Easy Steps

How to Repair 2911 Format Flash Driverar in 3 Easy Steps

If you have a Cisco 2911 router that needs to be formatted, you might encounter a problem with the flash driverar. This is a file that contains the operating system and configuration of the router. If the flash driverar is corrupted or damaged, you will not be able to boot up the router or access its settings. Fortunately, there is a way to repair 2911 format flash driverar using a USB drive and some commands. Here are the steps you need to follow:

  • Prepare a USB drive with at least 256 MB of free space. Format it as FAT32 and copy the IOS image file that matches your router model and version. You can download the IOS image file from Cisco's website or use the one that came with your router. The file name should be something like c2900-universalk9-mz.SPA.157-3.M4.bin.

  • Connect the USB drive to the router's USB port and power on the router. Press Break on your keyboard within 60 seconds to enter ROMMON mode. This is a special mode that allows you to perform low-level operations on the router. You should see a prompt like rommon 1 >.

  • Type the following commands in ROMMON mode, pressing Enter after each one. Replace x with the number of your USB drive (usually 0 or 1) and y with the number of your flash drive (usually 0 or 1). Replace c2900-universalk9-mz.SPA.157-3.M4.bin with the name of your IOS image file.


dir usbflashx:

dir flashy:

set BOOT=usbflashx:c2900-universalk9-mz.SPA.157-3.M4.bin


The first command will list t