Mavericks Install Failed?

How are you backing it up? I cannot get the computer to boot back into ML.

This is frustrating. Luckily, I had my old HDD that came with my MBP sitting intact from the time I put the SSD.

Booted machine using the old hdd and not trying to repair / recover for last 3 hrs.

Lesson learned, even Apple proved, FREE is not always good...

I also have the exact same problem.

I had the same message. I held down the Option key and R which asked which drive I wanted to use to boot up. I have my external HD partitioned with one part a bootable drive. I chose that - restarted and then was able to use Disk Utility to Repair my HD. I then used Option key and R and rebooted using the HD on my iMac. I then ran Verify Disk and everything was fine. Haven't yet had time to try to download and Install Mavericks.

I cannot boot back to ML, it always boots to the installer.

Got to the same issue and this is what I did:

1. Using Disk utility, repaired the disk. In my case the disk name was 'Macintosh HD'. I chose that and then hit repair disk. Luckily for me this went through without any incident.

2. Go to the Apple symbol on top and hit restart. It asked to choose the start up disk. I chose 'Macintosh HD' and hit Restart. It rebooted and went back to my old OS X as it was.

What a nightmare. I have decided not to upgrade to Mavericks any time soon.

I'm having a similar issue. I attempted to install mavericks and it failed. It said the disk is damaged and can't be repaired. It said after it restarts back up the data, and try installing again. I couldn't get out of it without going into recovery mode.

Recovery mode disk utility said there was a problem and couldnt solve it. I had backed up to Time Machine right before i tried installing this. But now I need to erase everything I guess? how do i do that? I've never done this before and im terrified. How do I reformat the the disk?

As always.... I recommend people to backup their machines before upgrading anything big like a OS Upgrade. Either do a Time Machine backup and know how to restore it in case something goes wrong. Or do a Carbon Copy Clone onto an external Hard drive. If Anyone has a current copy of DiskWarrior I recommend checking your drive before installing it. Its always good to check your hard drive for any directory issues before doing a major upgrade.

Mathew - do you have a backup of your data?

I too have had EXACTLY the same issue - never had issue with macbook pro in past - why then is EVERYONE mysteriously getting errors saying same thing?!

Thanks All for the tips - doing a verify now.....

Same issue. Macbook Pro (early 2011). No problems with the harddrive in the past. Mavericks started its install, but stopped after reporting disk errors. The system rebooted in recovery mode, but then I was toast. Disk Utility couldn't repair the disk because of too many errors. The disk won't mount (even trying Firewire target mode), so I can't recover the handful of files since my TimeMachine backup earlier today. (Any tricks for mounting a disk that Disk Utility refuses to mount because of errors?) Fortunately, I have a recent TM backup. Now I just hope the recovery from the TM backup works as advertised.

I thought Apple's installers were careful about checking for disk errors before a new OS created its partitions so that users could safely back out? Fortunately for me, I've never encountered a catastrophic OSX update like this before and I've had every public OSX release and every predecessor MacOS going back to the original System 7 in 1991. Unfortunately, I now have.

i have exactly the same probleme. I think i was an error in the hard drive. Do you think it is dead ?

It is NOT dead!

I have a solution that worked for me.

I tried the install like everyone else. It failed. I got stuck in the loop like everyone else... in that no matter what I did... I just could not roll back into my current setup. And if I tried to boot into safe mode, it would shut my computer down.

I have a windows partition that I use through bootcamp. It still ran fine. And as much as it's slightly funny to say this, by using Windows... I fixed the error.

My friend found a link to a product called Mac Drive 9 ( http://www.mediafour.com/products/macdrive/standard ). I went there, installed it ... it has a 5 day trial... and rebooted back into Windows.

At that point, I went into the macintosh HD from Windows. I went into the Applications folder and renamed the Mavericks install.app and then found an OS X Install data and renamed it as well.

Then I used Mac Drive 9 to repair my mac partition. It took about an hour and a half for it to work... with even a few times where I was sure that Mac Drive 9 stopped working... but it finally completed. I rebooted the machine... held down the option key (because that's how I see my Bootcamp/Windows and Mac partitions). I noticed immediately that instead of having OS X Installer gone and in its place was the familiar Macintosh HD... I clicked it... and I went RIGHT back into everything as though I had never left.

It worked. I can't believe it. I'm stunned. Windows actually helped fix my Mac.

I hope that helps someone else. I was convinced I was erasing and starting over. This was my last attempt. Everything else I had tried to do failed. The repair didn't work... verifying didn't even work. I tried like 6 things on the Terminal. nothing worked. I even was going to try creating a new partition to install the OS over on it so that I could attempt to fix the main partition. I was locked out of every option. It all failed until I tried that.

So if you have Bootcamp with Windows on it... get Mac Drive 9, rename those two items on the Mac side... do a repair... and you're golden!

I have been having the same problem. This is the solution:

1. Quit the Mac App Store

2. Go to your Applications folder

3. Find the file "OS X Mavericks.appdownload"

4. Double click the file and Mac App Store should open and resume the download.

It is a pain doing this every time it fails, but atleast it continues from where it stopped

I have downloaded Mavericks on four computers in my house, and have my MacBook Air left. It is impossible to download it from the App Store, and simultatious I download on a other computer hazless. I have now tried more than 10 times with no sucess. The error is "mavericks fail do download".

I have also tried both from the purchase and update in App Store stil with no sucess...

I have same problem and can not connect with apple live chat. Mavericks fails to install. I go to disk utility. The Repair disk is greyed out. How do i just go back to ML or be able to back up data from the utility screen. I only backed up really important files. This *****.