ASA 5506-X cannot boot system.

[Leon0177]

I have a ASA 5506-X that will not boot. It constantly repeats the following errors

File system not supported
Attempt autoboot: "boot disk0:"
File system not supported
boot: cannot determine first file name on device "disk0:"
autoboot: All boot attempts have failed.
autoboot: Restarting the system.

then proceeds to reboot. I have entered rommon mode and tried to view 'disk0:' but I recieve an error that says that the 'file system is not supported'.

The status light is flashing Amber.

This all occurred while trying to upgrade the ASA

[manabans]

Step 1: Load the device from ROMMON mode using the TFTP server having the image file.

Step 2: Verify if the flash is good or having errors.

References:
Load an Image Using ROMMON - https://www.cisco.com/c/en/us/td/docs/security/asa/asa98/configuration/general/asa-98-general-config/admin-swconfig.html#ID-2152-000008e5
Troubleshooting ASA Flash Errors - https://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/113266-asa-flash-error-ts.html

[Leon0177]

I am unable to run th fsck disk0: command as I have booted from disk1: (a flash drive) when I use the command it tells me that there is no such directory present. I can't even save running-config to startup-config.

[Marvin Rhoads]

Please share what version you are trying to upgrade to and what filename you are using.

[Leon0177]

Sorry to correct myself, it occurred after upgrading. I believe it was to 8.2 but i couldn't be sure.

[Marius Gunnerud]

Run a file system check. and then check if the disk is ok again.

fsck disk0:

[Leon0177]

I am unable to run this command as I have to boot from a flash drive (disk1:), when I run the command it says "Error checking disk0: (no such file or directory)

[Marvin Rhoads]

If you tried to use an 8.2 image (or anything other than the correct file type) it would fail on an ASA 5506-X.9.3(2) was the first image available for the ASA 5506-x back in 2015 or so.

The 5506-X (and 5508/12/16) requires you use a digitally signed image (ends with ".SPA"). Valid images can be found here:

https://software.cisco.com/download/home/286283326/type/280775065/release/9.8.4%20Interim