iMac 21.5 late 2012


I have an iMac end 2012. Recently, I noticed that its becomes really slow which becomes a little embarrassing.

I am running the latest version of OS X El Capitan.

Replace the SSD HARD drive would make a diff or should I just upgrade the RAM to 16 GB.

Thanks in advance



How much RAM do you have now?

And, how much free space on your hard drive?

Tags: Mac

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    • 3. given that us will be operated on the internal trunk of the reader of the Mac, it must start on OSX install USB (see Y.).
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    • 1. Since us will be operated on the internal drive of the Mac trunk, assumes that we already have boot up OSX install USB drive (see Y.).
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    • diskutil deletevolume E59B5A99-F8C1-461A-AE54-6EC11B095161 cs
    • 5 copy the long string after the logical volume group and replace the UUID with it in the following command to remove the drive (aka coreStorage) fusion:
    • diskutil cs remove UUID
    • p. ex. diskutil cs remove E03B3F30-6A1B-4DCD-9E14-5E927BC3F5DC
    • 6. at this stage, the fusion drive has been deleted, and hardsisk SSD and mechanical hard drive will be reappear in diskutil or separate records.
    • 7. If step 5 or 6 takes more than 30 minutes to complete, this means that the fusion drive has been corrupted. You can follow the commands below to clear the table to partition the hard way. First command clears the SSD drive, second command erases the HARD drive.
    • The command does not return a response, after 1 minute, press Ctrl + Z to complete orders. 1 minute is enough data to code and erase the partition table on the disk.
    • cat/etc/random >/dev/disk0
    • cat/etc/random >/dev/disk1
    • . C install a new copy of Mac OS x for the hard drive HDD and tested this disk partition hard recovery work.
    • 1. go on diskutil to create a partition called Macintosh HD HDD hard drive using all the space there.
    • 2 do the same with the mechanical hard drive.
    • 3. follow the usual procedure to boot from the installation of OSX USB and install a new copy of Mac OS x hard disk SSD.
    • 4. This will create the correct priming of the partitions, recovery hard drive partitions and PSX partitions hard disk HDD.
    • 5. once the installation is complete, test if OSX may start successfully, but no need to go through the initial MAC OS x didn't put in place that we're going to waste this and do the installation again later.
    • 6. we must now test if the recovery hard drive partition works.
    • 7. reboot for hard drive recovery (see X - by pressing command and R at the same time during boot right after that you hear sound start and release only a few seconds after you see the apple logo and the progress bar for loading...)
    • 8. it is important to test and make sure that the partition of hard drive recovery.
    • D. recreate the fusion drive
    • 1 since us will be operated on the internal trunk of the reader of the Mac, it must start on OSX install USB (see Y.).
    • 2. in the menu at the top of the screen, select utilities and Terminal.
    • 3
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  • 4. you will see something similar to the screen below.
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  • 6. search the largest disk partition mechanical forming fusion with the SSD hard drive. This should be close to the maximum size of the mechanical hard drive (for example 3 TB) hard disk and mark the name of the device, this will usually be something like/dev/disk1s2
  • 7
  • . Now let's create the merger in car (group alias logical volume) in the Terminal, type: diskutil cs create nom_lecteur driveIDs
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  • For example:
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    nom_lecteur - is the name of the drive and how you want that he
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  • driveIDs - Here is the Player IDs of the readers you want as part of your Fusion table, separated by a space. In our example, they are 'disk0' and 'disk1', but it may be different in your configuration.
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  • 8. you will see something like below appear on the screen:
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  • Disk1s2 of switching for the storage of carrots
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  • cs - called the basic storage functions, which are necessary for this arrangement.
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  • groupstring - this is the long alphanumeric string you copied in the previous step. It identifies the table you created such as getting a volume placed on it.
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  • Mac Mini (late 2012) "stall".


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    From time to time the servers stop responding to SSH and remote desktop. When I go to the site and look at the computer - it's running hot to the touch, screen wakes up but watch spinning wheel as when it's stop, keyboard and mouse enter ignored. I have to force it to stop, then it boots fine. I can't find a source of problem looking in the logs, finally the log messages before it "not won" natural look, no error or panic kernal, nothing fancy. Mini Mac just a sort of loop software and never gets. I tried to program computers at the stop for the night to cool down and have a new start every day, but that did not help either.

    On one of the servers 'bad' I erased the HD, installed 10.11.3 clean and [email protected] to test under load - all cores of CPU and GPU are loaded to 100%, mini gets hot, but it didn't make the problem worse or better - mini seeps into the State "unhooked" with a wheel that rotates once in a 2-3 weeks.

    Someone there had similar question? All suggestions will be welcome. At this point the only solution I see is to replace the logic board, but it costs about $600.

    When you find the problem, note the exact time: hour, minute, second.

    These must be run as administrator. If you have only one user account, you are the administrator.

    Run the Console application in one of the following ways:

    ☞ Enter the first letters of his name in a Spotlight search. Select from the results (it should be at the top).

    ☞ In the Finder, select go utilities ▹ of menu bar or press the combination of keys shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    The title of the Console window should be all Messages. If it isn't, select

    SYSTEM LOG QUERIES ▹ all Messages

    in the list of logs on the left. If you don't see this list, select

    List of newspapers seen ▹ display

    in the menu at the top of the screen bar.

    Each message in the journal begins with the date and time when it was entered. Highlight date back to the time you noted above.

    Select the messages entered since then until the end of the episode, or until they begin to repeat, whichever comes first.

    Copy messages to the Clipboard by pressing Control-C key combination. Paste into a reply to this message by pressing command + V.

    The journal contains a large amount of information, almost all this is useless to solve any particular problem. When you post a journal excerpt, be selective. A few dozen lines are almost always more than enough.

    Please don't dump blindly thousands of lines in the journal in this discussion.

    Please do not post screenshots of log messages - text poster.

    Some private information, such as your name, may appear in the log. Anonymize before posting.

    When you post the journal excerpt, an error message may appear on the web page: "you include content in your post that is not allowed", or "the message contains invalid characters." It's a bug in the forum software. Thanks for posting the text on Pastebin, then post here a link to the page you created.

    If you have an account on Pastebin, please do not select private in exposure menu to paste on the page, because no one else that you will be able to see it.

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    First try to reset the SMC & LANDAU 2 - 3 times back to back by LANDAU and Intel iMac SMC resets with all devices disconnected.

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