MP 1,1-5,1 External Hard Disk Question

[bigpoppa]

I bought a 16tb SATA drive and stuck it in an external case linked by USB. Formatted it just fine with HFS. Then after a month I wanted to try sliding it into the case and use a direct connection through SATA but the system doesn't see the formatted drive. Any ideas that would help?

 

[arw]

With “into the case“ I suspect you mean an internal bay of the Mac?
Normally it should work. What is the exact model of the drive?
Some drives, apparently, are only detected on cold boots.

https://forums.macrumors.com/threads/macpro-5-1-high-capacity-hard-drives.1971809/post-31028860

Do you see it in Disk Utility or in Terminal with

diskutil list

It‘s highly unlikely the specific SATA port is faulty but you could try another bay.

 

[h9826790]

https://forums.macrumors.com/threads/macpro-5-1-high-capacity-hard-drives.1971809/page-2?post=25660950#post-25660950

 

[bigpoppa]

With “into the case“ I suspect you mean an internal bay of the Mac?
Normally it should work. What is the exact model of the drive?
Some drives, apparently, are only detected on cold boots.

https://forums.macrumors.com/threads/macpro-5-1-high-capacity-hard-drives.1971809/post-31028860

Do you see it in Disk Utility or in Terminal with

diskutil list

It‘s highly unlikely the specific SATA port is faulty but you could try another bay.

Tried all the SATA ports, still nothing.

 

[arw]

Tried all the SATA ports, still nothing.

And covering pin 3 like suggested in post #3 didn‘t help?
What is the exact model?

 

[zedex]

It‘s highly unlikely the specific SATA port is faulty but you could try another bay.

Before you drive yourself mad, I would definitely verify that BAYS 1-4 work by inserting another known good regular capacity HDD or SSD.

BAYS 1-4 can collectively die (if you want to know more see my explanation here SATA BAYS NOT WORKING )

Even if they do die, BAYS 5-6 will still work [known as UPPER and LOWER].

Once confirmed, troubleshooting will be isolated to implementing remedies identified with the 'high capacity HDD' issue.