Hello!
I've got a tricky problem with my Z820 triyng to use a Turbo Drive with 256GB (first generation) as my boot drive.
What I've done so far:
1) as recommended, I upgraded the BIOS of the z820 to the latest version 3.92
2) I installed the Turbo Drive (SM951 1534 REV 0 NVMe)
-> the SSD was not detected as a boot drive in the BIOS
Nevertheless I went on:
3) I installed Win 8.1 prof. 64 in EFI-mode, which worked well up to the first attempt to rebbot while installing the os...
4) the SSD was still not detected as a boot drive...
I searched he internet and found an issue with Turbo Drives (part no. 801075-001 which is mine, too) and Z840 workstations (not z820??).
To fix this issue there is a firmware update (SP81375) for the SSD that changes the firmware from BXW73H0Q to BXW75H0Q. The software package contains an OEM version of the Samsung SSD Toolkit (DC_toolkit_OEM_V1_1_5.exe).
I tried to run this program (DC_toolkit_OEM_V1_1_5.exe) several times with different options and in different configurations (as normal user, as admin, in normal mode, in safe mode, with win 8.1 prof. 64 and win 10 prof. 64). It always crashes with a runtime error (no error code): "This application has requested the Runtime to terminate in an unusual way.", so that I can't update the SSD Firmware. The "end user" Samsung software "magician" does not work with OEM SSDs :-(
I reinstalled both the os's several times (onto the SAS Harddisk), always the same behaviour. I installed the SSD on my XW4600 workstation (win 8.1 prof. 64) as well, there the software for updating the firmware worked fine, but unfortunately the Turbo Drive keeps invisible both in the BIOS and the os.
So now I've run out of ideas; maybe here is someone to help me:-)
Walter
