Hi All, Cisco 2500 have the factory-default setting of 0x2102 for the register. This will boot from the IOS image on the flash WITH the configuration on the NVRAM. I wonder what other value I can use beside this 0x2102? My original problem was that I just upgraded the IOS for this Cisco 2500 router. The upgrade was successfully. I got the correct checksum. The register setting was then changed back t the factory-default 0x2102 (changed to 0x2141 for booting from Boot mode to upgrade the image). However, when I rebooted the router, the router kept reseting itself. I wonder if there is any other value beside 0x2102 that I can use for the register to let the router boot from the flash with the configuration? The router was also hardware upgrade with: - Boot ROM = 11.0(10c) - 16MB flash - 16MB memory The new IOS image is IP/H.323 version 12.2(1) Thomas N. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=17087&t=17087 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]