Mistake during OS dowgrade

[helpfranck]

Hello,

I made mistake duirng a downgrade process.
On the 6450 OS R08 ==> I had copy the OS R02 to working but same time to certified.
When i had boot the switch start a dump memory. I cannot login

So which is the procedure, myabe in using Miniboot (tape s during the boot) to re-install the RO8 OS ?
Thank for your help.

[silvio]

try it with usb disaster recovery - you will find some hints here in the forum.
usb stick (if possible test it in another 6450) with folder /6450/certified - in this folder all the wished image files.
inserst stick, boot the switch, Press S
If the recovery not start by itself:

Code: Select all

[Miniboot]->sysNewfs "/flash"
Destroy all data in /flash file system
Reinitializing flash file system.  Please wait...
Reliance File System Formatter

[Miniboot]->reboot 

Code: Select all

[Miniboot]->USB Disaster Recovery Activated
Bulk Device mounted at 480 Mbps. With 1 Logical Units at node 2
Initiate reformat of /flash
Destroy all data in /flash file system
Reinitializing flash file system.  Please wait...
Reliance File System Formatter
Datalight Reliance v3.2.2 Build 1376BV
VxWorks Edition for armarch5
Copyright (c) 2003-2008 Datalight, Inc.  All Rights Reserved Worldwide.
Patents: US#7284101.

.copying file /uflash/6450/certified/KFbase.img -> /flash/certified/KFbase.img
. . .

regards
Silvio