Yosemite Killed my iMac

You likely have a corrupt download. Was your iMac working perfectly before your downloaded it and do you have a backup of your system. Please answer both questions.

The you may have lost all of your data. It is absolutely critical to backup daily and especially when you are considering installing a major update. What version of OS X was installed prior to Yosemite, was it Mavericks as your profile indicates?

After updating to the latest minor securiy update my imac was frozen trying to boot showing the gray apple screen.

After a hard shut down, it starts that same gray apple screen but shuts down after few minutes.

Disk utility sees lot's of error / permission on HD but does not allow me to fix neither.

I tryed to reinstall Yosemite from recovery mode and I get a message " your HD is locked".

After googleing about this problem, the amount of users that updated to 10.10.2 with this kind of issue is huge.

They been comunicating this problem to Apple for a long time (it start to happen after the 10.10 upgrade) and they were hopeing that the 10.10.2 would fix it, but aparently the 10.10.2 even removed the work around that some "programer" had done on theire computers to be able to use them.

"do a back up" it's a disclamer for bad program. I would like to have a fix for my computer and know what is going on?????

You do realize that you are not talking to Apple here.

You are talking to other user like yourself who can do absolutely nothing about your Mac not the you have broken it.

So now you are being rude to both of us.

Thank you.

Most of the discussion has been outiside apple official website, and I have no idea how to add what is going on for them to see that it is a "I broke the computer because I didn't know that your update was unreliable" and "probably that is a way around to fix it"

I am not sure what level 8 means ... maybe someone knolagible that can help???

So I am wrong about that ... sorry, will try another ...

Thank you

What is rude about stating the truth?

If this page is to help ... it means that people are here because something went wrong.

If you answer is what it is ... than you can't help.

There for you way of thinking is broken to the purpose of this page.

If you can't help or don't know to fix, don't consider it doomed..... (as I stated some knolegible people were able to fix it)

But it was on that black screen that looks like a programming, and they change and add words to it, and I am not knolegble enough to risk doing that.

Please,

Just admit that you don't know, don't give answers that create more problems.

By your replies it seams to be an issue outside this page (private)

Ah! But I do know if you just change your attitude from Apple must fix your problem to there being a possibility it could be something you did and need to fix.

If you provide more information then I can help.

An easy way to do that is to download and install EtreCheck from http://www.etresoft.com/etrecheck

Run it and post the report here