I don't know if this is a 7,1 question or a macOS question, but here goes anyway.
I have a Mac Pro 7,1 and use macOS Catalina 10.15.7
Today I installed a Sonnet M.2 4x4 PCIe Card Silent and four HP EX950 2TB SSDs.
Finder could only see three of the four SSDs. Disk Utility could only find three of the SSDs.
So I took the whole durn thing apart - again - thinking I'd need to send the card back, or maybe try to isolate which SSD wasn't found and see if I could warranty it.
On an impulse I got out a Windows 10 laptop and put each SSD in turn into a USB adapter (an SSK Aluminum M.2 NVME SSD Enclosure Adapter). Using the Windows Disk Manager I found that three of the SSDs had an EFI volume and a large formatted volume. The fourth showed as one volume but no other specs that I can recall.
On a whim I formatted the fourth SSD using Disk Manager in Windows and then put all the SSDs back on the card and back into the 7,1.
macOS was happy to read all four SSDs! Formatting the "previously undetectable" SSD allowed macOS and Disk Utility to recognize that SSD.
All I can conclude so far is that Windows has some smarter disk formatting tools than macOS.
Can anyone explain whether I might have done something else on the Mac to enable it to find the SSD and correct its format?
Or would I need to download/buy some disk management software that is smarter than macOS's Finder and Disk Utility?
Tom
I have a Mac Pro 7,1 and use macOS Catalina 10.15.7
Today I installed a Sonnet M.2 4x4 PCIe Card Silent and four HP EX950 2TB SSDs.
Finder could only see three of the four SSDs. Disk Utility could only find three of the SSDs.
So I took the whole durn thing apart - again - thinking I'd need to send the card back, or maybe try to isolate which SSD wasn't found and see if I could warranty it.
On an impulse I got out a Windows 10 laptop and put each SSD in turn into a USB adapter (an SSK Aluminum M.2 NVME SSD Enclosure Adapter). Using the Windows Disk Manager I found that three of the SSDs had an EFI volume and a large formatted volume. The fourth showed as one volume but no other specs that I can recall.
On a whim I formatted the fourth SSD using Disk Manager in Windows and then put all the SSDs back on the card and back into the 7,1.
macOS was happy to read all four SSDs! Formatting the "previously undetectable" SSD allowed macOS and Disk Utility to recognize that SSD.
All I can conclude so far is that Windows has some smarter disk formatting tools than macOS.
Can anyone explain whether I might have done something else on the Mac to enable it to find the SSD and correct its format?
Or would I need to download/buy some disk management software that is smarter than macOS's Finder and Disk Utility?
Tom