Open Radar

 
Summary:
When installing OS X ML (10.8) on a mac protected by FileVault, the keyboard reverted to a US layout without notice.
Took a while to realize it and find the right mapping for the keys of my password.

Steps to Reproduce:
- Find a Mac with an ISO layout for example french, or german. 
- It has to have filevault for the whole disk activated. Choose a password containing a q an m and punctuations (?.,/+) etc
- Upgrade to ML
- When the computer reboots on first stage, you should get a FileVault permission screen before ML actually gets installed.
- type your password, won't work
- get into the activation key stage and type whatever you want to realize your KB layout is US/Qwerty 
- Remap the keys in your brain to type your password

Expected Results:
- on that stage the keyboard should be mapped to the preferences of the user (probably in the settings of the rescue disk)
OR
- indicate it is mapped to a US keyboard after 3 tries.


Actual Results:
No info, confusion, fear, anger, hate, dark side.

Regression:

Notes:
Pretty hard on reproduce on my side as I won't reinstall ML soon. I suspect it is in the boot rescue settings that the keyboard layout can accidentally revert to US Qwerty.