Change account username and home folder issue

Eric, thank you for your reply.

I had no data when I changed the username and home folder name.

Is there a way to check the preferences manually?

Many thanks for your support.

Eric, thank you.

Actually Keychain access app has been malfuncitoning since Yosemite was installed and username and home folders were renamed.

Sintomps

the following services and apps keeps asking to use "Login" keychain

- Messages

- Calendar Agent

- Safari

- ScopedBookmarkAgent

- accountds

- com.apple.helper

I always lock keychain. Keychain is sync with admin account password. Keychain verified and repaired. No problems found

I have followed this tutorial with no good result

OS X Mavericks v10.9.1: Repeated prompts to unlock "Local Items" keychain PS: the alpha numeric folder in ~/Library/Keychains/ starts with letter b not letter A as suggested in the tutorial

Resetting your keychain in Mac OS X

OS X: Keychain Access asks for keychain "login" after changing login password

What are you thoughts? Thank you for your support.

Eric, thank you for your reply. Keychain issue resolved after reading this article. Keychain must be left open when logged in to stop keychain prompt to type passwords for applications like safari messages, etc.

http://www.mactipsandtricks.com/tips/display.lasso?mactip=125

As regard to username and home folder (see step1 and 2 above), Apple Store did a fresh installation of Yosemite. During set up process I was asked to enter username and home folder name. I used the same name (e.g. mycomputer) that I had prior fresh install.

As a result, Finder is showing the tags that I had created prior fresh installation.

Surely a fresh installation should have wiped the SSD out completely? Or not?

Thank you for your thoughts.

ah! OK, I saw the Apple guy in store doing this

Disk Utility > Hard Drive > Erase

So, does that mean that the hard drive was not erased?

Also, does that mean that the preferences for other users still exist on the SSD - how do I delete them (do they need to be deleted) ?

Thank you for your support and advice.

Hello everyone, I have found this untested methos to erase data on SSD

Secure erase data on a Solid State Drive?

The erase function from Disk Utility seems not sufficient to erase your data and users' preferences - apparently.

Any thoughts?

I hope that this helps. Cheers

Eric, just to add on the reformat/install topic

I have read What to do before selling or giving away your Mac - Apple Support which says on Point 6

After you reformat your hard drive and reinstall OS X, the computer restarts to a Welcome screen and asks you to choose a country or region. If you want to leave the Mac in an out-of-box state, don't continue with the setup of your system. Instead, press Command-Q to shut down the Mac. When the new owner turns on the Mac, the Setup Assistant will guide them through the setup process.

This is what I was prompted to do when the Apple Store guys returned the laptop to me. So I can conclude that the Apple Store guys reformatted the hard drive through Disck Utility > Erase

So why is it that the old tags still showing up in Finder??

Misteries of Apple....

Thank you for reading for your thoughts on this, hopefully last post of this thread :-)

Cheers

spoke to Apple Store guys and old tags for old users show up cuz they are sync with iCloud. Solved.