2010.4--解决7206升级故障

       升级7206路由器，使用copy tftp:c7200-is-mz.123-6f.bin disk2: ，拷贝后制定使用新ISO启动，router(config)#boot system flash：c7200-is-mz.123-6f.bin ，然后重启，但还是使用原来的c7200-ipbasek9-mz.124-15.T10.bin启动，升级失败，然后使用copy tftp:c7200-is-mz.123-6f.bin disk2 c7200-is-mz.123-6f.bin ，提示没有此命令（这里少敲了个flash和冒号，注意：在敲该命令的时候disk2是隐藏的），最后使用了boot system bootldr:c7200-is-mz.123-6f.bin disk2，重启，路由器停在进rommon中， 只能进入rommon，路由器已经不能进入系统了。

       进入rommon模式查看要升级的IOS--c7200-is-mz.123-6f.bin ，rommon 4 > dir disk2:
Checksum failed on c7200-atafslib-m
Expected checksum: 2d4a, calculated checksum: f896
open: file "c7200-atafslib-m" not found
open(): Open Error = -1
loadprog: error - on file open
cannot load the monitor library "eprom:%c7200-atafslib-m" from device: PCMCIA compact flashdir: cannot open device "disk2:"

路由器不能够识别FLASH卡，看看能不能从tftpnld升级，居然没有该命令，只能借助另外一台7206来格式化这张FLASH卡，重新启动路由器，再灌入要升级的IOS，居然显示：
*** Emulating mis-aligned store at 0x80000194
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x80000198
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x8000019c
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x800001a0
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x800001a4
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x800001a8
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x800001ac
    PC = 0x800117dc ... succeeded

*** Emulating mis-aligned store at 0x800001b0
    PC = 0x800117dc ... succeeded

最后只能拔掉该FLASH卡，看看能不能进系统，可以进入系统，但是提示符显示Router(boot)，使用Router(boot)#show bootflash:
-#- ED ----type---- --crc--- -seek-- nlen -length- ---------date/time--------- name
1   .. image        38EF057E  7FA784   25  8103684 Feb 12 2000 20:27:42 +00:00 c7200-kboot-mz.124-12.bin

7886972 bytes available (8103812 bytes used)

原始里面有个min IOS，然后通过format disk2: 格式化后，再用读卡器灌入新IOS，系统可以进入，问题解决。

 

备注：可以使用s bootvar来查看基本信息：

BOOT variable = disk2:c7200-is-mz.123-6f.bin,1;bootflash:c7200-kboot-mz.124-12.bin,1;
CONFIG_FILE variable =
BOOTLDR variable =
WARM_REBOOT variable = FALSE
Configuration register is 0x2102