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Disk I/O errors

Hi,
Model: MacBook Pro7.1
Sata II
Year: 2010
CPU: Intel Core 2 Duo
OS X 10.8.5
RAM: 4GB

SSD: Samsung 840 EVO 250GB
Firmware Revision: EXT0BB0Q

Bought a new Samsung EV0 840 (non-pro) installed as main drive, connected to MacBook Pro 13" model 7.1, with SATA II. Installed Trim Enabler (Groths.org). From the very beginning for a couple of weeks the disk was producing I/O errors, sometimes even did not boot correctly. After a couple of weeks the SSD was dead.

Sent it back and received a new replacement.

After installing a new one, enabled TRIM (Groths) again, ran Blackmagicdesign Disk Speed Test and had again I/O errors after about 1-5 mins of the drive test. Disabled TRIM and the test went well for about 4 hours, then I stopped the test.

After I tried to use a different TRIM enabler (Chameleon SSD Optimizer) and the Blackmagicdesign Disk Speed Test has been running well either (now already about 1 hour).

Does anyone have any strong opinion about:
a) TRIM ENABLED on Samsung SSD 840 EVO 250 GB (Yes/No)
b) if Yes, TRIM ENABLED with Chameleon or Groths?


Anyone experiencing similar issues?

Thank you very much:) It has been quite a nightmare and thought the MBP is dead, SATA cable to be replaced or the motherboard was dead....now I have some hopes
 

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Hi,
Model: MacBook Pro7.1
Sata II
Year: 2010
CPU: Intel Core 2 Duo
OS X 10.8.5
RAM: 4GB

SSD: Samsung 840 EVO 250GB
Firmware Revision: EXT0BB0Q

Bought a new Samsung EV0 840 (non-pro) installed as main drive, connected to MacBook Pro 13" model 7.1, with SATA II. Installed Trim Enabler (Groths.org). From the very beginning for a couple of weeks the disk was producing I/O errors, sometimes even did not boot correctly. After a couple of weeks the SSD was dead.

Sent it back and received a new replacement.

After installing a new one, enabled TRIM (Groths) again, ran Blackmagicdesign Disk Speed Test and had again I/O errors after about 1-5 mins of the drive test. Disabled TRIM and the test went well for about 4 hours, then I stopped the test.

After I tried to use a different TRIM enabler (Chameleon SSD Optimizer) and the Blackmagicdesign Disk Speed Test has been running well either (now already about 1 hour).

Does anyone have any strong opinion about:
a) TRIM ENABLED on Samsung SSD 840 EVO 250 GB (Yes/No)
b) if Yes, TRIM ENABLED with Chameleon or Groths?

Anyone experiencing similar issues?

Thank you very much:) It has been quite a nightmare and thought the MBP is dead, SATA cable to be replaced or the motherboard was dead....now I have some hopes

Sad to hear that! I am having the 750 GB version of 840 EVO with TRIM enabled (Groths) since day 1 of purchase and I haven't noticed any issues in a month and half of use.

By the way, how do you check I/O errors on Mac OS ?
 
I run the 250 GB Version of the 840 EVO, which came with the latest firmware supplied, since yesterday and enabled TRIM (Also with Groths Tool). Let´s hope I won´t run into any issues.
 
Re: I/O Error

Sad to hear that! I am having the 750 GB version of 840 EVO with TRIM enabled (Groths) since day 1 of purchase and I haven't noticed any issues in a month and half of use.

By the way, how do you check I/O errors on Mac OS ?

Hi, there. Lucky you. Perhaps my problem is linked to SATA II, while with your MBP 2012 you have already a faster SATA III equipped motherboard...

I am checking a system log at the Mac's Console, located in Applications -> Utilities ->Console. When the SSD had a problem it looked like this:

Dec 06 01:00:00:37 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.
Dec 06 01:00:00:39 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.
Dec 06 01:00:00:41 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.
 
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Hi, there. Lucky you. Perhaps my problem is linked to SATA II, while with your MBP 2012 you have already a faster SATA III equipped motherboard...

I am checking a system log at the Mac's Console, located in Applications -> Utilities ->Console. When the SSD had a problem it looked like this:

Dec 06 01:00:00:37 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.
Dec 06 01:00:00:39 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.
Dec 06 01:00:00:41 XXX.MacBook.Pro kernel[0]: disk0s2: I/O= error.

Thanks a lot for the info. I have searched through all the logs from the Console and I did not find any I/O errors. Feeling so relieved :).

So either you got a defective drive or maybe the SATA II is to blame as you said. Maybe some other people having SSDs installed on SATA II-interface can share their thoughts.
 
Maybe you only had a defective unit though.

Maybe, I also thought so, until I received the new one and had the same problem for a while, then switched off the TRIM - all was OK after and then switched back on the TRIM, but this time with Chameleon. Since then (about 24 hours) have been still testing with BlackMagicDesign Drive Speed Test and all is OK. The hope is there :)

Thank you for your thoughts. Good luck.
 
Firmware Update using PC ISO

All, I was able to install my new SSD (840 EVO 500GB) and can confirm that the ISO downloaded from the PC link (http://www.samsung.com/us/support/owners/product/MZ-7TE1T0BW#) appeared to work.

Unfortunately my SSD has the latest firmware so I could not actually install the update. The bootdisk was able to see the SSD and was able to determine it had the latest firmware so it I would imagine this method would work.
 
How to tell firmware on 840 EVO?

All, I was able to install my new SSD (840 EVO 500GB) and can confirm that the ISO downloaded from the PC link (http://www.samsung.com/us/support/owners/product/MZ-7TE1T0BW#) appeared to work.

Unfortunately my SSD has the latest firmware so I could not actually install the update. The bootdisk was able to see the SSD and was able to determine it had the latest firmware so it I would imagine this method would work.

How can you look up the firmware version so you don't waste the time in trying to update. There's a mac update listed as December 2013. No accompanying PDF, that column is blank on the Samsung SSD website.

I'd rather not waste time burning a disk to discover there's no real firmware update. :rolleyes:
 
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Three wasted DVDs...

After burning the BTSDK file three times in Disk Utility to a DVD and attempting to restart to the DVD, I surrender.

Looking at the contents, there doesn't even appear to be any mac related files.
There's config.sys and exe type files. So it appears Samsung 840 EVO staff is making fun of mac users.

As for encouraging people to download a windows file, I guess you load that onto a DVD/CD to make frisbees.
:rolleyes:

No, I'm not going to play with Linux files.
 
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All, I was able to install my new SSD (840 EVO 500GB) and can confirm that the ISO downloaded from the PC link (http://www.samsung.com/us/support/owners/product/MZ-7TE1T0BW#) appeared to work.

Unfortunately my SSD has the latest firmware so I could not actually install the update. The bootdisk was able to see the SSD and was able to determine it had the latest firmware so it I would imagine this method would work.

Finally, nothing really helped and had to put back the old HDD- Back to 70's. Probably the SATA II of the logic board to blame. HDD works fine. I hope someone from Apple or Samsung will with a firmware update to solve the issue.
 
After burning the BTSDK file three times in Disk Utility to a DVD and attempting to restart to the DVD, I surrender.

Looking at the contents, there doesn't even appear to be any mac related files.
There's config.sys and exe type files. So it appears Samsung 840 EVO staff is making fun of mac users.

As for encouraging people to download a windows file, I guess you load that onto a DVD/CD to make frisbees.
:rolleyes:

No, I'm not going to play with Linux files.

Sorry, I misunderstood your first question. If you go to the Apple menu>About This Mac>More Info..>System Report>SATA/SATAExpress then select the SSD and look under revision. This is the Firmware you are running.

All I can say is that I was able to create a bootdisk from the file hosted under the Firmware Download > Win XP/Vista/Win 7/Win 8 and was able to boot and run the firmware update process, but I already had the latest firmware.

http://www.samsung.com/us/support/owners/product/MZ-7TE1T0BW#

I have a 2013 15 inch MBP and a Samsung 840 EVO 500 GB.

What do you have? if it is an 840 EVO the same file should work for you. Is that what you downloaded?

I am not sure what BTSDK file you are talking about the CD image I downloaded was called Samsung_SSD_840_EVO_EXT0BB0Q.iso

The direct link to that file is http://downloadcenter.samsung.com/c...029145847601/Samsung_SSD_840_EVO_EXT0BB0Q.iso

BTW, I am not encouraging anyone to do anything. This solution appears to work for me, I used this thread and another as reference when solving my issue. I felt that I should share that information with the community since the data posted here had been useful to me.

I wish I could 100% verify that the firmware update would work but since I have a new drive with the most recent firmware I cannot do that. I got it 99% of the way there and feel that it would be successful and so that is why I shared what I found. :)

----------

Finally, nothing really helped and had to put back the old HDD- Back to 70's. Probably the SATA II of the logic board to blame. HDD works fine. I hope someone from Apple or Samsung will with a firmware update to solve the issue.

So were you actually able to update the firmware with the method I posted? Sorry to hear your problem is not solved.
 
Thanks for the detailed reply jvcrabb. Yes, that is the same file I downloaded. Also, the info under SATA on mine says:

Model: Samsung SSD 840 EVO 250GB
Revision: EXT0BB0Q

Saw there was some kind of December revision but there is no accompanying pdf on the Samsung website. Everything is running fine, in fact better than fine. So maybe I'll just go ahead and remove the optical drive and add another HDD. ;)

Thanks again for filling in some gaps. Hope this is helpful to others.
 
Installed ssd, then system seems to restart every minute or so

So it was a pain in the ass to finally get my SSD (Samsung 250 GB Evo) to work in my mid 2010 MBP, but after I finally got it to boot up, the system (or something, im not too sure what it is) keeps rebooting every minute or so. It makes transferring data to and from a thumb drive or external HD impossible. It's a little frustrating. Any words of advice will be very much appreciated. I've tried a bunch of different things to see what's up to no avail. So someone, please help!
 
Has anyone tried to install firmware from a partition

Has anyone tried to install firmware from a partition on their hard drive? I do not have an internal optical drive. The external one works well but, I cannot do the firmware upgrade with it. It boots and then hangs.
 
Has anyone tried to install firmware from a partition on their hard drive? I do not have an internal optical drive. The external one works well but, I cannot do the firmware upgrade with it. It boots and then hangs.
I've tried using a Bootcamp install on a second internal HDD to upgrade the internal SSD, but it didn't work for me. I used the Magician software that Samsung has available, but it doesn't detect my SSD.
 
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