Unable to install OS X Yosemite

Hi,
I want to upgrade my OS X from 10.6.8 to Yosemite, I went to App store and clicked on Get button to download, It asked me for AppleID and password. I gave the same credentials which I am using to post this query (through my AppleID) but I am getting the below error from "Sign in to download from the App Store" window.
Your device or computer could not be verified. Contact support for assistance.
Please kindly help to download Yosemite as my Macbookpro is compatible.
Thanks
Suresh

You can try a few things. That message is likely due to a network problem.
Try signing in and downloading while ethernet connected.
Try another network.
Or you can try:
Removed files below located within /Library/Preferences/SystemConfiguration/
- com.apple.airport.preferences.plist
- com.apple.network.identification.plist
- com.apple.wifi.message-tracer.plist
- NetworkInterfaces.plist
- preferences.plist
Restart the computer, connect to your network and try downloading again.

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Unable to Install OS X Yosemite from USB Bootable Installer

I have created a Yosemite USB bootable installer using similar instructions (I changed source and target names as appropriate) as provided to create a Mavericks USB bootable installer - Creating a bootable OS X installer in OS X Mavericks
Target disk has been wiped clean, verified, partitioned, etc.
After booting from the USB bootable installer, and agreeing to the terms of the software license agreement and choosing the newly cleaned disk to have OS X installed on, installation starts and the following dialogue box appears ...
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Thinking I may have corrupted something I re-downloaded Yosemite, walked through the whole process and received the same 'sad' results.
I also followed the same process with Mavericks -- same message with "Mavericks" instead of "Yosemite".
Equipment: MacBook Pro -- Model A1286
Error logs (from the installer) are verbose but don't seem to have any unusual 'complaints'.
Any thoughts?

You can try a few things. That message is likely due to a network problem.
Try signing in and downloading while ethernet connected.
Try another network.
Or you can try:
Removed files below located within /Library/Preferences/SystemConfiguration/
- com.apple.airport.preferences.plist
- com.apple.network.identification.plist
- com.apple.wifi.message-tracer.plist
- NetworkInterfaces.plist
- preferences.plist
Restart the computer, connect to your network and try downloading again.

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I've downloaded the OS upgrade to my Mac and all seemed OK until installation. Now, I can't get beyond a screen that announces "OS X could not be installed on your computer. File system verify or repair failed. Quit the installer to restart your computer and try again." Anyone have any ideas?

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ive tried repairing disk (judging by the log the installer does this anyway during installation).
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Thanks for any help in advance. I recently purchased this item from Amazon:
HDD/SSD SATA III caddy for Apple MacBook (Pro) replaces SuperDrive + slot-in USB enclosure for SuperDrive - 9.5 mm (SATA - SATA) - TheNatural2020: Amazon.co.uk: Computers & Accessories
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SimonStokes wrote:
is it possible that it's the cable between the caddy and the motherboard that's the problem?
Yes. I have seen that SSDs in the 'normal' boot drive location have problems when the SATA cable is not shielded. Swapping back the original HDD makes the MBP functional.
I am guessing that you may be experiencing the same phenomenon. Wrap the cable in tin foil and see if that makes a difference.
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Am unable to install CS5 on mac running yosemite. Tried installing JavaFor OSX, it still doesn't work. Error message reads "inconsistency in the installer database"

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Hi,
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Hi @PhillipK7,
Welcome to the HP Forums!
I noticed that you are unable to install the driver for your HP Officejet 8600, on Mac OS X 10.10. I am happy to look into this for you!
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Are you able to make copies with the printer? Copying a Multipage Original.
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Hope this gets you connected again, and have a good day!
“Please click the Thumbs up icon below to thank me for responding.”
RnRMusicMan
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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Recently I uninstalled my Adobe InCopy and InDesign (CS6) applications using the Adobe installer. Something went wrong with one of them, as it did not properly uninstall CS6 and instead displayed an uninstaller error.
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Hi Koen,
As we are encountering a couple of errors, let’s try to take them down one by one.
Firstly, let’s work on Download error and spinning wheel.
https://helpx.adobe.com/creative-cloud/kb/error-downloading-cc-apps.html
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keg55 wrote:
Not for the 10.10.2 Combo update.
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HELP ME! Unable to Boot from Install OS X Yosemite USB
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I created Install OS X Yosemite 10.10.2 USB as guided at https://support.apple.com/en-us/ht201372 using my MacBook Pro Retina Late-2013.
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Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
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b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

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