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slow iMac

Very slow machine.   You helped me so much before, may I beg your assistance again?  First, how do I attach my etrecheck report?

We don't yet need your EtreCheck report until asked for.


Ways to help make a slow Mac faster

 

  1. 17 Reasons Why Your Mac Runs Slower Than it Should
  2. Slow Mac Performance? This Article Solves It!
  3. Fix slow start-ups in OS X | MacFixIt - CNET Reviews
  4. How to fix slow shutdown and startup times. | MacTip.net
  5. 6 Easy Tips to Speed Up OS X Yosemite on Your Mac
  6. OS X El Capitan- If your Mac runs slowly
  7. Visit The XLab FAQs and read the FAQ on Performance
  8. Tips to Fix Issues that affect Mac Performance
  9. Avoid using any third-party cleanup software. Usually, this software does more bad than good. You don't need it. All computers become slower over time even under normal use. Experienced users erase the hard drive and do a clean install from scratch from time to time; or whenever installing a major OS upgrade. Doing so means you must maintain regular and multiple backups.
  10. If you have enabled iCloud Disk and are storing your Documents and Data in iCloud, then consider turning that off and signing out of iCloud. It can slow down the computer considerably. Please see the following from the user, fotomac: "The solution was to SIGN OUT of iCloud and my problem STOPPED! NO MORE SPINNING BEACHBALL! My computer's speed increased to what it should be and all my Apps now work!"
  11. Add more RAM or cut back on the number of concurrently running applications and utilities. Remove unnecessary anti-malware software and any software that promises to clean your Mac. Check for runaway processes: Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity. Also, visit The XLab FAQs and read the FAQ on dealing with The Spinning Beach Ball of Death.
  12. The Ultimate Fix: Backup everything, erase the drive, reinstall OS X, and restore your data from the backup. Reinstall third-party software from original media/scratch.

 

Possible Fixes for Lion to Yosemite Installations

 

You should try each, one at a time, then test to see if the problem is fixed before going on to the next.

 

     Be sure to backup your files before proceeding if possible.

 

  1. Resetting your Mac's PRAM and NVRAM
  2. Intel-based Macs: Resetting the System Management Controller (SMC)
  3. Start the computer in Safe Mode, then restart normally. This is slower than a standard startup.
  4. Repair the disk by booting the from the Recovery HD. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Choose Disk Utility and click on the Continue button. After Disk Utility loads select the hard drive entry (mfgr.'s ID and drive size) from the side list.  In the Disk Utility status area, you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (S.M.A.R.T status is not reported for external drives.) If the drive is "Verified" then select the indented (usually, Macintosh HD) volume from the list.  Click on the First Aid tab, then click on the Repair Disk button. When it finishes then click on the Repair Permissions button. When that has completed quit Disk Utility and return to the Utility Menu. Select Restart from the Apple menu.
  5. Create a New User Account Open Users & Groups preferences. Click on the lock icon and enter your Admin password when prompted. On the left under Current User click on the Add [+] button below Login Options. Setup a new Admin user account. Upon completion log out of your current account then log into the new account. If your problems cease, then consider switching to the new account and transferring your files to it - Transferring files from one User Account to another.
  6. Reinstall OS X by booting from the Recovery HD using the Command and R keys. When the Utility Menu appears select Reinstall OS X then click on the Continue button.
  7. Erase and Install OS X Restart the computer. Immediately after the chime hold down the Command and R keys until the Apple logo appears. When the Utility Menu appears:
  1. Select Disk Utility from the Utility Menu and click on Continue button.
  2. When Disk Utility loads select the drive (out-dented entry) from the Device list.
  3. Click on the Partition tab in Disk Utility's main window toolbar.
  4. Set the number of partitions to one (1) from the Partition Scheme dropdown menu.
  5. Set the Format type to Mac OS Extended (Journaled.)
  6. Click on the Apply button.
  7. Quit Disk Utility and return to the Utility Menu
  8. Select Restart from the Apple Menu.

最後更新：2017-08-18 09:24:35

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