Hi everybody!
I'm trying to upgrade a CRS-1/8 from 3.9.2 to 4.3.0
1) It's a CRS-1 with redundant RPs, I think it's not a problem.
http://www.cisco.com/en/US/partner/prod/collateral/routers/ps5763/product_bulletin_c25-663499.html
2) Current rommon version is 1.54. Also looks fine.
http://www.cisco.com/en/US/partner/docs/routers/crs/software/crs_r4.3/rommon/configuration/guide/b_rommon_cg_43xcrs_chapter_0110.html
3) Procedure:
To minimize downtime I used a PCMCIA card with 4.3.0 previously installed in a LAB router.
Without powering down the router I removed both RPs.
I inserted my disk0: with 4.3.0 in RP0 and inserted RP0.
The router started to boot up, but it went into a boot up loop. It didn't show any errors or failures.
I broke the loop with Ctrl+c, and in rommon could't see disk0:.
To recover, I used this procedure, but didn't try the upgrade again.
https://supportforums.cisco.com/message/4045146#4045146
Bootflash was corrupted. I assume I did it myself, but what should I do to prevent this from happening again?
Any advice?
Thanks, Diego.