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Why HDD is slow?

I bought SSD Savage 240GB HyperX and replaced HDD with SSD, I also bought caddy and placed HDD Hitachi 250Gb HTS545025B9SA02 into caddy, how was described in manual for my MacBook Mid 2010 7.1 MC374xx/A.

I rebooted computer from HDD and it was successful. Sierra started quite fast.

Then I formatted SSD

Then I run "Install Sierra" file and it installation never finished after 12 hours.

After some investigation it seems HDD/SSD general speed is very slow. Just to copy 5Gb file cost 2 days.

Installing Sierra from USB the same issue.

Questions:

Can I do something to fix it or should I give up on caddy and SSD?

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Contacted Kingston and my model of SSD not compatible with my MacBook.

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Honestly with this issue, I would install sierra on the SSD using a different mac. Then I would pull the regular HD and set the default boot to the SSD. During Formatting the SSD, you need to make sure everything is formatted under Mac OS X Extended (Journaled), or you are definitely going to have issues. I am assuming you are using OS X Disk Utility to format. Make sure to fully erase before reformatting. If you are having issues, we are a full mail in repair business, and do not hesitate to reach out at any time.

Chris

CGR Enterprises

224-650-7002

cgrenterprises.com

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Yes I formatted it in Disk Utility in mac recovery mode. It was also suspiciously very fast.

What I did first I checked if this is issue in DVD slot, I disconnected SSD and left HDD in caddy connected to DVD, it works fine, so problem must be related to SSD and my MacBook.

Checked negotiated speed and it is 3Gbps for SSD in system settings.

also installed AHT to USB, no issues.

I think to find exact my model is complicated. It could be also well known issue of my MacBook, this is why I posted question.

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