Bug搬运工-CSCvg37458：ISR4K goes into booting loop with "flash:" in boot statement

ISR4K升级的时候要注意了！

很可能会碰到如下的问题：

ISR4K goes into booting loop with "flash:" in boot statement

CSCvg37458

 

Description

Symptom:
ISR4K configured with a boot statement pointing to the "flash:" directory will get stuck in a boot loop.

Boot statement will look similar to:
boot system flash:image.bin

When rebooting, the console will show:

Last reset cause: LocalSoft
ISR4331/K9 platform with 4194304 Kbytes of main memory


........

Device not found flash:

........

autoboot: boot failed, restarting...

Conditions:
Boot statement will explicitly point to "flash" instead of "bootflash" despite being the same directory.
This issue occurs in all version (for instance: 3.16.X to 3.17.X or 16.X, 16.X to 16.Y, 16.X to 3.X).

below boot up statements will trigger the failure

boot system flash:image-name
boot system flash flash:image-name

Workaround:
from rommon mode, manually boot up the image. for example:

rommon> boot bootflash:image-name

Another workaround requires modifying the boot system configuration as follows:

boot system bootflash:image-name.bin

Notice the semicolon was removed between the flash and image-name.bin. ROMMON will check its flash device for the image-name.bin. For the ISR4K platforms, the flash device is the bootflash:.

Further Problem Description:
below IOS boot up statements work:

boot system bootflash:image-name
boot system flash bootflash:image-name

this is fixed at ROMMON release 16.9(1r).

 

Last Modified:

Nov 21,2019

Status:

Fixed

Severity:

3 Moderate

 

Product:

(1)

Cisco 4000 Series Integrated Services Routers

 

 

Known Affected Releases:

(4)

15.5(3)S6.1

15.6(1)S

Denali-16.3.4

Everest-16.6.1

 

Known Fixed Releases:

(0)

 

 

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