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New Member

ASA 5510 cannot save flash to disk0:

I deleted the flash from an ASA5510. I was able to tftp a version back into the device, but cannot seem to correctly have the box boot from this flash. I get the following error:

!WARNING: BOOT variable added, but not a valid image disk0: /asa831-k8.bin

*** Output from config line 41,"boot system disk0:/asa83..."

I have tried every save syntax i can think of to save this flash, but have yet to have it boot with an image ( I keep booting into ROMMON and have to tftp the image back in)

any pointers on what I am overlooking?

New Member

Re: ASA 5510 cannot save flash to disk0:

Download the config file to tftp server. Verify the line "boot system ....". I am sure that image pointer has the different name than the one you have recently uploaded. Please check and update.


Sent from Cisco Technical Support iPad App

New Member

ASA 5510 cannot save flash to disk0:

do you see anything particular with the show commands I used?


Re: ASA 5510 cannot save flash to disk0:


Can you try - show flash -

You should be able to see the file you uploaded from TFTP.

Then check - show run boot -

You should have the file name you want to boot and poiting to disk0.

do - write mem - and try the - reload - again.


New Member

ASA 5510 cannot save flash to disk0:

ciscoasa# sh flash

--#--  --length--  -----date/time------  path

    3  4096        Feb 02 2012 18:58:06  log

    6  4096        Feb 02 2012 18:58:14  crypto_archive

   12  4096        Feb 02 2012 18:58:16  coredumpinfo

   13  43          Feb 02 2012 18:58:16  coredumpinfo/coredump.cfg

   81  196         Feb 02 2012 18:58:16  upgrade_startup_errors_201202021858.log

   83  2081        Feb 02 2012 19:36:38  asa831-k8.bin

   84  2081        Feb 02 2012 19:46:18  81

ciscoasa# sh run boot

boot system disk0:/asa831-k8.bin

ciscoasa# sh run

boot system disk0:/asa831-k8.bin

ftp mode passive

pager lines 24

no failover

icmp unreachable rate-limit 1 burst-size 1

no asdm history enable

arp timeout 14400

Hall of Fame Super Silver

ASA 5510 cannot save flash to disk0:

Your boot command syntax is correct and matches the image's file name. So that's all good.

I suspect perhaps a corrupted image. I suggest you download a new copy from and put that onto your disk0:

asa831-k8.bin should be 15570.00 KB (15943680 bytes)

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