Why ASA ask "Pre-configure Firewall now through interactive prompts" ?

Hi, When ASA start/reload, occasionally it asks "Pre-configure Firewall now through interactive prompts [yes]?" while most time it does not ask this question. When it ask it, if hitting the enter key, it keeps asking more questions, which takes a lot time to answer. What cause the situation ? how to prevent it from happening ?

The following is parts of message when reloading
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Reading from flash...
Flash read failed
ERROR: MIGRATION - Could not get the startup configuration.

Cryptochecksum (changed): d41d8cd9 8f00b204 e9800998 ecf8427e

INFO: MIGRATION - Saving the startup errors to file 'flash:upgrade_startup_errors_201506281637.log'
Pre-configure Firewall now through interactive prompts [yes]?
Firewall Mode [Routed]:
Enable password [<use current password>]:
Allow password recovery [yes]?
Clock (UTC):
  Year [2015]:
  Month [Jun]:
  Day [28]:
  Time [16:37:35]:
Management IP address:
Address required
Management IP address:
Address required
Management IP address:
eemoonAsked:
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JustInCaseCommented:
ASA is starting wizard because it can't find startup config.
If startup config is found wizard will not start, so just configure your ASA and issue
# copy run start
Or on first question type
n
and press enter.
:)
It will skip configuration wizard.

In Cisco when you see command like this:
Pre-configure Firewall now through interactive prompts [yes]?
if you just press Enter it will assume you want default answer that is given in square brackets - so that will be yes in this case.

In the case you saved something as startup config you should not be prompt for wizard, and if you are prompt to start wizard you most most likely have faulty device.
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AkinsdNetwork AdministratorCommented:
Just for clarity as Pedrak mentioned.

Pre-configure Firewall now through interactive prompts [yes]? No

Just type no, and  press enter to exit the wizard and configure manually.
Every Cisco device out of the box or when the startup config has been erased launches the configuration wizard by default.
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eemoonAuthor Commented:
Thank you so much for your reply. You are very right. I did erase start-config, which caused the problem
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