HT1553 Will uploading Mountain lion delete my files?

Will uploading Mountain Lion Delete my files or do I have to back up my files first?

Yes; having your backups on the same drive as the original data won't help when that drive fails.
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Will updating to lion delete my files?

I wanted to know if upgrading to Lion will delete my files, apps, etc? MBP 2011

No.
Unless something goes wrong. Which is why it's recommended that you perform a full backup, and create additional backups of your most critical data, before you perform a major OS upgrade.

Will upgrading to a new OS like Lion or Mountain Lion delete my previous files on my computer? Will I have to back up my files with a hard drive first?

Will upgrading to a new OS like Lion or Mountain Lion delete my previous files on my computer? Will I have to back up my files with a hard drive first?

Upgrades do not delete your personal files in the Home folder. But any installation can go bad, so it would be wise to backup your current system to an external hard drive.
Upgrade Paths to Snow Leopard, Lion, and/or Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion - System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
         See App Compatibility Table - RoaringApps.
     For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.

Will Mountain Lion delete iWeb?

Considering upgrade to Mountain Lion, do not want to lose the iWeb package that was shipped with my iMac when I bought it mid July 2011. Does anyone know for sure if Mountain Lion deletes iWeb on install? Thank you.

I ran across a "hack" that will let one run Front Row with Lion:
Ralph Perdomo reports that he has ported OS X Front Row to Lion by moving several frameworks and the application itself from his old Snow Leopard install. He wrote up the procedure over on his weblog and has provided an optional installer for anyone who didn't keep a Snow Leopard install around.
Perdomo reports that the re-installed application seems to work well, and he does not seem to have run into conflicts from what I can tell. The frameworks/app in question are:
/System/Library/CoreServices/Front Row.app
/System/Library/PrivateFrameworks/BackRow.framework
/System/Library/PrivateFrameworks/iPhotoAccess.framework
/System/Library/LaunchAgents/com.apple.RemoteUI.plist
/Applications/Front Row.app (Front Row 2 in folder)
TUAW has not had a chance to test this hack out, but we applaud Perdomo for his creativity in the face of OS upgrades.
I haven't tried it either so can't confirm or deny that it works.

I'm running Lion 10.7.4 on my MacBook. Can I upload Mountain Lion? Thanks.

I'm running Lion 10.7.4 on my MacBook. Can I upload Mountain Lion? Thanks.

First we need to know which one of the 9 different models of MacBook you have. To see which model you have go to the Apple in the upper left corner and select About This Mac, then click on More Info and then System Report. When System Profiler comes up check the Model Identifier and post it back here.

Does anyone have problems using the highlights, shadows and sharpness edits in iphoto? Since I uploaded Mountain Lion, those editing tabs do not work!

Does anyone have problems using the highlights, shadows and sharpness controls in iphoto 11? Since I uploaded Mountain Lion on my
mac mini, those editing features no longer work!!!!

Sorry, I booted into 10.8 just to test this, but I only have iPhoto 08.

How many computers will one mountain lion app upgrade?

How many devices will one mountain lion upgrade, one or more?

As many computers as you control (not your neighbor's though).
Just log in to App Store on other coputers with Apple ID that purchased.

I just upgraded my system to Mountain Lion. If I restore my Macbook Pro back to the very beginning state, will the Mountain Lion be removed or not? Thank you

I just upgraded my system to Mountain Lion. If I restore my Macbook Pro back to the very beginning state, will the Mountain Lion be removed or not? Thank you

The only problem that I forsee is that some have reported problems getting machine-specific builds of Lion via Internet Recovery. Not sure if it's working yet or not. But you could give it a shot, I suppose. Basically what you want to do is 'prepare your computer for resale' - just like it came out of the box. Kappy, a pretty wonderful and very knowledgeable man, has tip for that which I have copied and will paste below:
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
    1.    Select Disk Utility from the main menu and click on the Continue button.
    2.    After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click on the Erase tab in the DU main window.
    3.    Set the format type to Mac OS Extended (Journaled.) Click on the Erase button and wait until the process has completed.
    4.    Quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Good luck,
Clinton

I've just installed mountain lion and my files are all out of their previous folders. Can I set them back or do I need to manually put them back in order??

I've just installed mountain lion and my files are all out of their previous folders. Can I set them back or do I need to manually put them back in order??

Hi Thomas,
Thanks for the response. So, after the computer did it's restart thing after installing I went into finder where I usually have everything come up including my Macintosh HD folder and all it's folders and files.. Anyway it was this that hadn't come up and all the files were listed under All My Files and out of all their folders. I totally switched the computer off after posted the problem and now having switched it back on I see that it's all there and in it's proper files.

Will updating to Mountain Lion delete files?

I updated one Mac and a folder full of files on my desktop was deleted in the installation of Mountain Lion. Was this user error or will it happen again?

Welcome to the Apple Support Communities
You won't lose data but you must make a backup because things like losing folders can happen during the Mac OS X upgrade. I recommend you to buy an external drive, create two volumes on it and use one for Time Machine and the other for Carbon Copy Cloner

Will upgrading from Lion to Mountain Lion delete my Windows partition (bootcamp)?

On my other computer I upgraded from Snow Leopard to Mountain Lion, and the windows vista partition was completely deleted. I was wondering if I upgrade from Lion to Mountain Lion on my other mac with Windows 7 will it be affected, or in other words, is Mountain Lion Bootcamp compatable with WIndows 7. Should I save it to an external hard drive?
Thanks!

No OS X installer deletes a Windows partition automatically. There is no reason for a Mountain Lion installer to do so when upgrading from Lion.
Nevertheless, having backups is always a good idea no matter what. If you don't have them, then this is a good time for them.

Will upgrading to Mountain Lion delete MS Office?

I have MS Office installed on Lion OSX and I am really worried about what will happen once I upgrade to Mountain Lion. Will I lose the installation? Will I have to reinstall from the disc? Or will office survive the upgrade and appear in Mountain Lion? I lost my disc a long time ago. I have a 2011 MacBook Pro.

Yes it is compatible so with will not delete it or render it unusable.
See this article to make sure you have 2008 or later.
http://www.macrumors.com/2012/07/25/microsoft-confirms-office-2011-and-2008-comp atibility-with-os-x-mountain-lion/http://

It is my first time updating an operating system on my mac.will lion delete my files off my hard drive when I upgrade to lion?

I reccently bought my imac around christmas of 2009, and this is the first time I have ever upgraded the operating system on my mac. will upgrading to lion completely wipe out all the files and data on my hard drive?

No, it won't. But you should make a backup of your files, document your settings and check application compatibility.

Mavericks upgrade from Mountain Lion deletes all user accounts

This is a lesson for upgrading too early (and too eagerly).
Today I tried the Mavericks upgrade from Mountain Lion on my 2007 Macbook Pro, after going through all the pre-installation/pre-upgrade checklists.
I don't think I have gone from a very high to a down low in such a short space of time. I really wanted to move on from Mountain Lion and when the installer finished the upgrade to Mavericks and re-started my MBP, I was super excited. When the restart completed and I was presented with the login prompt, I tried entering my user name and password. First time, it shaked on the password... OK, you'd think that is a typo. Re-entering the password... same thing.
You can imagine what ensued. After entering my password v-e-r-y slowly many times, I started realising that something went very VERY wrong.
Just for information, I used two different user accounts on my MBP under Mountain Lion. The one account had administrative priviledges and was only used for installing applications and a few other administrative tasks. Then I have a second personal account, which does not have administrative priviledges and is the account I use daily for Mail, Safari, iTunes, programming etc.
None of those accounts worked under Mountain Lion. Basically, there is no way in.
I then proceeded to boot with the startup option Cmd + S (command-line access). Once that was completed, I was in as root and checked the /etc/passwd. None of the user accounts were there. I was only able to find two user accounts: root and nobody; and a long list of user account that started with an underscore (I think these are some sort of esoteric user accounts). So, it appears that the Mavericks upgrade did not accurately bring over the user account information from my Mountail Lion installation.
Then, I went into the /Users directory and there I could see the home directories for all the users as they were defined under Mountain Lion. The contents were intact too.
It seems to me that the Mavericks upgrade from my Mountain Lion forgot to bring over the user accounts but it did preserve the contents of all the users' home directories.
Unless anyone can spot some sort of user error here (please let me know), I am heading back to Mountain Lion pretty swiftly. Otherwise, I suspect there is a bug in the Mavericks installer.
Any assistance is appreciated.

The reason this occurred is a mystery and has not been commonly reported. Consider the following. It may or may not help. You should probably print these instructions before proceeding.
Boot Single User mode again and do the following:
(You can skip the first step. It will check your boot volume for errors and correct what it can. If there were errors the installer should not have proceeded, but the possibility exists that directory corruption may have occurred during installation. That seems unlikely to me but could explain what went wrong.)
In Single User Mode:
At the :/ root# prompt, type fsck -fy and press Return or Enter. It will take a few moments to complete. If you are concerned that nothing is happening just press the Return key until you see the :/ root# prompt again.
Once the disk check is complete and the prompt returns, type mount -uw / and press Return / Enter.
Type launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist and press Enter. If you get an error message you may ignore it.
Type ls /Users and press Enter. All of the usernames on the computer will be listed, which is helpful if you don’t know or remember what these are.
Type dscl . passwd /Users/username password while replacing username with one of the users displayed in the previous step and replacing password with the new password of your choice. Press Enter. You will likely get an error message about a file or directory not being found. You may ignore this.
Type reboot and press Enter.

Will reinstalling mountain lion fix image retention

After installing mavericks i started getting image retention so i was wondering if reinstalling mountain lion will fix my problem.

It's unlikely that has a thing to do with OS version. But it you wish to reinstall Mountain Lion:
Erase the drive.
Reinstall Mountain Lion from a backup.
Since your computer can run Mavericks you will no longer be able to re-download Mountain Lion. However, if Mountain Lion was pre-installed on your computer, then you may be able to reinstall it by going through an Internet Recovery:
Install Mavericks, Lion/Mountain Lion Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
This may restore the version of OS X originally pre-installed on the computer.

HT1553 Will uploading Mountain lion delete my files?

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