Android password requested after fastboot

[JKarhani]

Hello,
I am trying to reset an intel machine with android 5.0 using fastboot.

If I do a complete reset, I have no problem, it encrypts normally & boot & works as a charm.
But what I need is to reset the machine while keeping the data, so I removed this command:
fastboot format data

After booting the machine I got a screen saying "to start android, enter your password"
whatever last password enetered, I get the folowing (as if the password is wrong) & start resetting the machine..it works well, but no data is there too.
I have no idea to what password does it means nor any of my known passwords work.
Any Solution?
N.B : I tried with the screenlock password when i had one & it didn't work.

 

[D13H4RD2L1V3]

Hello there.

If you enabled the option to ask for a password/PIN on boot, when you start up your device, before the full-boot process is completed, the system will ask you for your password/PIN.

This is the same PIN you would use to unlock your device after it has been asleep. Basically the screen-lock password.

 

[JKarhani]

hELLO D13H4RD2L1V3,
thank you but I tried it before & didn't work.

 

[D13H4RD2L1V3]

hELLO D13H4RD2L1V3,
thank you but I tried it before & didn't work.

Not sure what's up, but it's likely that something got messed up during the fastboot process which may have rendered your screen lock password useless.

 

[JKarhani]

No here you go, the password is 12345678
whatever you put as yr pinlock!!

thank you, closed.