Thanks a lot for the info, once my Mac Pro 7,1 arrives next week I'll double check which version of MacOS is installed on it
Correct, only to NVMe drives mounted to PCIe cards for multiple NVMes with PCIe switch chips onboard since the Mac Pro does not support PCIe Bifurcation. USB and SATA ports are fine, even the 3rd party PCIe SATA controller cards.Does this issue only appear to happen on NVMe SSDs that are installed on PCIe cards mounted internally on the Mac Pro?
Has anyone heard of this happening to drives connected to the internal SATA ports or the internal USB port?
Awesome, thank you for the details. It is also great to hear that you haven't encountered any mount issues on Sequoia for such a long time. Keep us posted on how things are going!Correct, only to NVMe drives mounted to PCIe cards for multiple NVMes with PCIe switch chips onboard since the Mac Pro does not support PCIe Bifurcation. USB and SATA ports are fine, even the 3rd party PCIe SATA controller cards.
Anyway it will soon be 2 months without sinle mount issue on Sequoia since Beta 1 relased on 30th of May.
Correct, only to NVMe drives mounted to PCIe cards for multiple NVMes with PCIe switch chips onboard since the Mac Pro does not support PCIe Bifurcation. USB and SATA ports are fine, even the 3rd party PCIe SATA controller cards.
Zero cards thar require Bifurcation work with Mac Pro because the machine itself does not support it. Only the first drive will be recognized from those cards. Thats why Mac Pro requires cards with PEX PCIe switch so that it will do the "Bifurcation" role and comminicate between PCIe bus and all NVMe drives separately.That's not entirely correct, given the number of higher quality switch cards (eg Highpoint) that don't require Bifurcation support.
Several of us here don't experience mounting issues.
That's not entirely correct, given the number of higher quality switch cards (eg Highpoint) that don't require Bifurcation support.
Several of us here don't experience mounting issues.
Which HighPoint cards are you using which do not result in the mounting issues on the Mac Pro?
Is it the SSD7540 / SSD7505 ?
Thanks @flowrider @mattspace, it is great to hear that these cards do not have any of the SSD mounting issues.
Is the 1104 meant to have up to 4x M.2 SSDs set up with OS RAID or as JBODs?
Yesterday I updated to Sonoma 14.6.1 and after the update completed there were no drives. After the cold boot still no drives.macOS Sequoia 15.0 Beta 5 (24A5309e) upgraded the firmware versions:
FROM:
System Firmware Version: 2068.0.0.0.0 (iBridge: 22.16.10328.5.1,0)
OS Loader Version: 582~532
TO:
System Firmware Version: 2069.0.0.0.0 (iBridge: 22.16.10339.5.2,0)
OS Loader Version: 582~883
And still no sign of the mount issues 🥳
If they are upgrading the Mac Pro firmware with os15, maybe the bug is not in the os itself but in the firmware… so maybe we will be able to run previous os versions without problems 🤔Fingers crossed, but it seems this issue has ben solved with macOS 15...
And this problem I only saw with Sonoma.If they are upgrading the Mac Pro firmware with os15
And this problem I only saw with Sonoma.
So Apple caused this. At least they have solved it in macOS 15 - but unfortunately they have broken other things so far.
I'm on 14.6. Only one boot-mount misfire since I updated, which I'm willing to consider a fluke for the moment. The issue appears to be solved there too. At least until they break it again.If they are upgrading the Mac Pro firmware with os15, maybe the bug is not in the os itself but in the firmware… so maybe we will be able to run previous os versions without problems 🤔
One restart from Windows and all drives mounted, at last!I had this problem in Ventura.
I’ll switch to Mac Pro for daily work and test this.
Great news, for how long you haven't experienced mount issues on 14.6.1 ?It seems that the problems with disconnecting PCIe drives are solved. I upgraded to 14.6.1 and everything runs smoothly. Unfortunately, other minor bugs MacOS Sonoma have cropped up.🤦♂️