Samsung 840 EVO running slow in macbook 2012, how to fix?

Thanks for your reply. I made a terrible mistake: In the disk speed test I selected my HDD instead of my SSD. What a disgrace. When I select the SDD I get the 500 GB/s. Sorry for the inconvenience.

But, are there any other ideas why OS X takes more than 5 minutes boot up?

Well, that's a relief!

As to your five minute boot time - do you have a lot of third-party items launching at boot? Do you reopen all applications on boot? I would suspect third-party system modifications first - but then I have a lot AND I reopen at least a dozen applications when booting and my boot time is less than a minute. Download, unzip and run EtreCheck and see exactly what you have launching on start-up. There may be just one in the bunch that's causing the problem or even conflicting.

Glas your drive speed is in the 500's and not the 50's!

Clinton

On a shutdown I select that no programm should be opened again. So that should not be the problem.

Ok, i ran EtreCheck and have some questions:

Are this to many programms on a startup?

Especialy the Paragon NTFS causes a problem, i uninstall it and test if it get better.

Problem System Launch Agents:

[System] com.paragon.NTFS.notify.plist 3rd-Party support link

Launch Daemons:

[System] com.adobe.SwitchBoard.plist 3rd-Party support link

[System] com.barebones.authd.plist 3rd-Party support link

[System] com.charlessoft.pacifist.helper.plist 3rd-Party support link

[System] com.dustinrue.Tedium.plist 3rd-Party support link

[System] com.fxfactory.FxFactory.helper.plist 3rd-Party support link

[System] com.metakine.handsoff.daemon.plist 3rd-Party support link

[System] com.microsoft.office.licensing.helper.plist 3rd-Party support link

[System] com.oracle.java.Helper-Tool.plist 3rd-Party support link

[System] com.oracle.java.JavaUpdateHelper.plist 3rd-Party support link

[System] com.teamviewer.teamviewer_service.plist 3rd-Party support link

[System] de.meilenstein.MSTFirstRunInstaller.plist 3rd-Party support link

[System] de.meilenstein.MSTHostPreferences.plist 3rd-Party support link

[System] org.cindori.AuthHelper.plist 3rd-Party support link

[System] org.gpgtools.gpgmail.patch-uuid.plist 3rd-Party support link

[System] org.pqrs.NoEjectDelay.load.plist 3rd-Party support link

[System] org.virtualbox.startup.plist 3rd-Party support link

Launch Agents:

[System] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link

[System] com.Logitech.Control Center.Daemon.plist 3rd-Party support link

[System] com.metakine.handsoff.agent.plist 3rd-Party support link

[System] com.oracle.java.Java-Updater.plist 3rd-Party support link

[System] com.paragon.updater.plist 3rd-Party support link

[System] com.teamviewer.teamviewer.plist 3rd-Party support link

[System] com.teamviewer.teamviewer_desktop.plist 3rd-Party support link

[System] org.gpgtools.gpgmail.enable-bundles.plist 3rd-Party support link

[System] org.gpgtools.gpgmail.patch-uuid-user.plist 3rd-Party support link

[System] org.gpgtools.Libmacgpg.xpc.plist 3rd-Party support link

[System] org.gpgtools.macgpg2.fix.plist 3rd-Party support link

[System] org.gpgtools.macgpg2.shutdown-gpg-agent.plist 3rd-Party support link

[System] org.gpgtools.macgpg2.updater.plist 3rd-Party support link

[System] org.pqrs.KeyRemap4MacBook.server.plist 3rd-Party support link

User Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link

[not loaded] com.adobe.ARM.[...].plist 3rd-Party support link

[not loaded] com.adobe.ARM.[...].plist 3rd-Party support link

[not loaded] com.google.keystone.agent.plist 3rd-Party support link

[not loaded] com.spotify.webhelper.plist 3rd-Party support link

[not loaded] org.virtualbox.vboxwebsrv.plist 3rd-Party support link

[not loaded] XSManager.plist 3rd-Party support link

User Login Items:

iTunesHelper

Bartender

gfxCardStatus

Google Chrome

Google Drive

BetterTouchTool

Skype

X-Lite

SwitchResX Daemon

Dropbox

HazelHelper

Adium

KiesAgent

Mail

AirServer

Bowtie

Spotify

fuspredownloader

Black Mouton: when you said you moved the SSD to the lower position - did you mean when lower when installing, but upper when you flip the Mac Mini the right way up, or lower when the Mac Mini is the right way up?

Yes I meant the lower position when it's up side down. It's also the position where the original Apple harddisk is installed.

huntatwork wrote:

Black Mouton: when you said you moved the SSD to the lower position - did you mean when lower when installing, but upper when you flip the Mac Mini the right way up, or lower when the Mac Mini is the right way up?

Don't know if someone is gonna read this yet, but i'm thinking about replace the HD of my MacBook Pro mid-2012 with a Samsung 840 EVO 500Gb.

You talk about lots of apps to clone the HD. To do this, I need to plug the SSD on the USB, do the cloning, and then replace the HD, is that it? How can I plug the SSD to USB?

I've seen videos of how to do a Bootable pen-drive of Mountain Lion. Isn't it easier to boot from a pen-drive e just recover the backup from Time Machine?

I had the same problem with my samsung 840 250gb, using now el captain. (Had no problems on LION)

reinstalled the system, even connected the ssd to PC and upgraded the firmware.

but nothing helped.

then I found this:

open terminal and write this command: sudo trimforce enable

need to reboot the system.

pixu wrote:

I have a Samsung 840 SSD too (DXT06B0Q). I'm not sure if it was called EVO then, but promised speeds were around 330 write and 520 read. I have trim enabler and 86/500GB free space.

I'm getting inconsistent results too. First it might go up to 200/450, but soon drops to under 100/200 -speeds. Maybe a faulty unit?