C25 Boot issue

[Sachu]

Hi,

Can anyone provide any support to fix the below issue in C25 controller.

VFS: Cannot open root device "sda1" or unknown-block(0,0)Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

it is not giving me option to selection "Controller Rescue"

[Jason1]

Hello Sachu,

If you reboot the controller with a serial console connection, do you see the Controller and Controller Rescue ? This article has steps to take once at that menu.

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-revert-the-controller-image-Using-R...

If you cannot get to that menu, I would suggest giving a call to GTAC and opening a case to look further into this.

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-contact-Extreme-Networks-Global-Tec...

Regards,
Jason