HI Ronni,
Yes I seem to have the Recovery disk

 3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3


but I also have these  listed after

/dev/disk1 (internal, virtual):

the mac



/dev/disk2 (disk image):

   #:                       TYPE NAME                    SIZE
IDENTIFIER

   0:                            Installer              +41.0 MB    disk2


/dev/disk3 (disk image):

   #:                       TYPE NAME                    SIZE
IDENTIFIER

   0:                            Installer              +41.0 MB    disk3


/dev/disk4 (disk image):

   #:                       TYPE NAME                    SIZE
IDENTIFIER

   0:                            Installer              +41.0 MB    disk4



Rosemary Spark
PO Box 781
South Fremantle WA 6162 Australia
Phone: + 61 8 94336609
Mobile: 0414268043
[email protected]

On 5 October 2016 at 15:38, Ronni Brown <[email protected]> wrote:

> Hi Rosemary,
>
> Doesn’t sound like you have booted into the Recovery Partition.
> Here is how to boot into Recovery Drive:
>
>    1. Shut down your Mac. (Apple menu > Shut Down.)
>    2. Hold down the Command and R keys simultaneously and press the Power
>    button.
>    3. Keep holding Command and R until the Apple logo appears on the
>    screen. Let go of the keys and wait for the Mac to complete starting up.
>    (It should take longer than normal.)
>    4. You should be faced with a screen saying OS X Utilities. This is
>    the Recovery Partition. If you have this, you're good to go.
>
>
> But - If the Mac boots into OS X, or if you're faced with a completely
> blank screen, then you haven't got a recovery partition.
> If your Mac does boot into OS X then you can also check Terminal to see if
> you have a recovery partition:
>
> Check in Terminal if you have a Recovery Partition installed on your
> MacBook Pro.
> Open Terminal.
> Enter *diskutil list*
> You should see a list of all the volumes and partitions on your computer.
> The first drive (/dev/disk0) should have a partition (typically listed as*
>  3: Apple_Boot Recovery HD* after it).
>
> Post back if you have the Recovery Partition installed on your MacBook Pro.
>
> If you haven't got a recovery partition on your Mac, then you need to
> reinstall OS X.
> Even if OS X is working, you should probably consider reinstalling it
> because a missing Recovery Partition is not a good sign.
> But mostly you'll be confronted with this problem when OS X isn't working
> and you can't recover it the normal way.
>
> The first approach is to use a feature called *Internet Recovery.* Newer
> Macs are able to boot directly from an internet connection, even with no
> recovery drive available.
> I won’t give you details how to until I know if you have a Recovery
> Partition or Not!
>
> Cheers,
> Ronni
>
> On 5 Oct. 2016, at 9:35 am, Rosemary Spark <[email protected]> wrote:
>
> Hi Ronni,
> {BTW Overview Hardware 2 memory slots 8GB each}
> I thought I followed your instructions, but there seems still to be
> problems (messages about no app memory).
> When I go to Disk Utility now in the disc list there are 3 "ghost"
> installers listed. Where will I find these? There does not seem to be any
> Installer folders I can see, but they are listed under my Time Machine in
> Disk Utility
>
> Thanks
>
> Rosemary Spark
> PO Box 781
> South Fremantle WA 6162 Australia
> Phone: + 61 8 94336609
> Mobile: 0414268043
> [email protected]
>
> On 4 October 2016 at 15:58, Ronni Brown <[email protected]> wrote:
>
>> Hi Rosemary,
>>
>> No Storage is not RAM  (Random Access Memory)
>> Under the Apple logo at top left of the Menu Bar -  'About this Mac’
>> System Report - Hardware Overview - Memory 8GB?
>> —
>>
>> If Sierra itself is the problem, you’ll need to install it anew.
>> You can do this without affecting your files and settings.
>> For this to work in* macOS Recovery*, *you must be connected to the
>> Internet. *
>>
>> 1. You need to remove any existing “Install macOS Sierra” application
>> from the Mac.
>>
>> 2. Boot into the hidden* macOS Recovery Partition *
>>
>> Hold down *Command-R *at startup until the Apple logo appears to see
>> emergency mode.
>> macOS Recovery gives you four choices:
>>
>> 3. Select *“**Reinstall macOS**”*
>>
>> Click the Wi-Fi icon at the top right of the screen and choose a network.
>> Enter the network’s password, if necessary.
>> Select Reinstall macOS, and then click the Continue button.
>>
>> The Sierra installer data—roughly 5 GB downloads over the Internet from
>> Apple’s servers; once the download is finished, installation proceeds.
>>
>> Be prepared for the download to take anywhere from 20 minutes to several
>> hours, depending on your connection; installation will then take another 15
>> to 30 minutes.
>> —
>> During installation your Mac will restart a few times, sometimes you
>> won’t hear a start up chime the screen will just be black.
>> Let the installation process complete - don’t interrupt it!
>> —
>> After your MacBook Pro boots into mac OS Sierra 10.12
>> *Perform Post-installation Tasks:*
>> *A) Respond to Immediate Questions*
>> Among the most common questions are requests for your user account
>> password or Apple ID password. For example, certain apps may once again
>> need an administrator’s authorization to make changes to your data, and
>> various apps that use your Apple ID (including iTunes and iBooks) may need
>> you to sign in again.
>>
>> Check *System Preferences > iCloud* to make sure you’re signed in to
>> iCloud (and with the correct Apple ID). Do the same in iTunes (Account >
>> View My Account) and the App Store (Store > View My Account).
>> *NOTE:  Make sure “iCloud Drive” in NOT activated! *(unless you wish to
>> use it; you can set it up at a later date if needed)
>>
>> B) The next thing you should do is to update macOS itself (and any other
>> crucial Apple software) to the latest version. Sometimes Apple releases bug
>> fixes and security updates almost immediately after a major upgrade, and if
>> any such urgent updates are available, it’s in your best interest to
>> install them right away.
>>
>> C) *Review the Incompatible Software Folder*
>> If the Sierra installer encounters any known incompatibilities, it moves
>> the problematic software to an Incompatible Software folder and explains
>> what it moved on one of the final screens of Setup Assistant. (After Setup
>> Assistant quits, you can find the Incompatible Software folder at the top
>> level of your startup disk, at the top level of your home folder, or even
>> in both places, depending on the location of the soft- ware that was
>> disabled.)
>>
>> D) *Deal with Other Surprises*
>> *Apple Mail:*  The first time you launch Mail, a window informs you that
>> it’s “upgrading” your mail database. This step should take no more than a
>> few minutes, and is necessary because the Sierra version of Mail has
>> updated the database format it uses to store information about your
>> messages.
>>
>> *Mail plug-ins:* The first time you open Mail after upgrading, it moves
>> most incompatible third-party plug-ins (which are normally stored in
>> ~/Library/Mail/Bundles) into ~/Library/Mail/Bundles (Disabled) and displays
>> an alert telling you what it’s disabled. Don’t try to reenable these
>> manually; Mail will thwart your every effort
>> to get them working. Check with the developer to see if a Sierra-
>> compatible update is available.
>>
>> E) *System Preferences Changes:*
>> As usual, Apple added, moved, and renamed a few items in System
>> Preferences.
>> I won’t do into the changes here, I’m just alerting you to check.
>>
>> Cheers,
>> Ronni
>>
>> *13-inch MacBook Air (April 2014)*
>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>> 8GB 1600MHz LPDDR3 SDRAM
>> 512GB PCIe-based Flash Storage
>>
>> macOS Sierra 10.12
>>
>> On 4 Oct. 2016, at 1:57 pm, Rosemary Spark <[email protected]> wrote:
>>
>> Hi Ronni,
>>
>> 1) Storage (is that RAM?)
>>
>>  Available: 170.77 GB (170,768,736,256 bytes)
>>
>>   Capacity: 499.05 GB (499,046,809,600 bytes)
>>
>> 2) How do re-install Sierra (it's loaded...but I don't know if properly)
>>
>> Cheers
>>
>> Rosemary
>>
>> Rosemary Spark
>> PO Box 781
>> South Fremantle WA 6162 Australia
>> Phone: + 61 8 94336609
>> Mobile: 0414268043
>> [email protected]
>>
>> On 4 October 2016 at 11:48, Ronni Brown <[email protected]> wrote:
>>
>>> Hello Rosemary,
>>>
>>> How much RAM (memory) do you have installed in your MacBook Pro?
>>>
>>> If you get an error message while installing macOS Sierra saying that
>>> you don't have enough hard drive space, then restart your Mac and boot into
>>> safe mode.
>>> To do this, turn off your Mac and wait 10 seconds, the press the power
>>> button.
>>>
>>> Once you hear the startup tone hold down the Shift key on your keyboard.
>>> When the grey Apple logo appears, release the Shift key.
>>>
>>> Once in safe mode delete any unnecessary files, or move them to an
>>> external hard drive, to free up some disk space.
>>>
>>> Then restart your Mac and try to install macOS Sierra again.
>>>
>>> Cheers,
>>> Ronni
>>>
>>> *13-inch MacBook Air (April 2014)*
>>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>>> 8GB 1600MHz LPDDR3 SDRAM
>>> 512GB PCIe-based Flash Storage
>>>
>>> macOS Sierra 10.12
>>>
>>>
>>> On 4 Oct. 2016, at 9:30 am, Rosemary Spark <[email protected]> wrote:
>>>
>>> Hi there,
>>> I downloaded Sierra as I seemed to be OK (2012 macbook pro) (after
>>> backing up etc Ronni!)
>>>
>>> However, when it loaded it stopped and said there wasn't enough app
>>> memory... with only Setup running!
>>>
>>> So I said cancel...but it seems Sierra was loaded anyway.
>>>
>>> I've now gone through my apps again and deleted even more of the
>>> infrequently used ones....there's now 2.57 GB of App memory
>>>
>>> When I looked at the Activity Monitor the app using all the memory was
>>> Installer...then it dropped off while I was watching. It seems that maybe
>>> some of the Setup was not complete.
>>>
>>> How do I  check if some Setup stuff is incomplete or re-install?
>>>
>>> Cheers
>>> Rosemary
>>>
>>> Rosemary Spark
>>> PO Box 781
>>> South Fremantle WA 6162 Australia
>>> Phone: + 61 8 94336609
>>> Mobile: 0414268043
>>> [email protected]
>>>
>>>
>
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