Difficulties in the exciting world of GPT vs MBR M.2

Mates,

I use an HP z420 for 3D modeling and an HP z620 (dual CPU) for simulation and rendering.

As these two system use the same BIOS, the recovery software with OS is the same disk, and both systems run on Quadro GPU's, it seemed that I might be able to simply move the HP Z Turbo Drive (Samsung SM951 M.2) from the z620 to the z420. The principal difference in the two systems' drive department is that the z620 is all GPT and the z420 is all MBR partitioning. The Z Turbo was recently set up with updated software while the z420 drive was set up in 2015 and full of weedy programs and errors, and 15% fragmented.

And this did work- at first. I disconnected the Intel 730 and WD Black drives in the z420, plugged in the Z turbo Drive and it booted into Windows and all the programs ran. However, when I reconnected the Intel and WD drives, the z420 would not boot, with an error message, to the effect that the boot disk was GPT formatted and Legacy Boot was not supported.

In the z620 BIOS, the Z-Turbo was listed in the UEFI devices, but in the z420 it is generically mentioned as "M.2Slot4".

> Can the Z-Turbo be moved in BIOS from Legacy to the UEFI devices category?

> Or, is the only solution to try a lossless GPT to MBR conversion on the Z Turbo?

> Or, reinstall everything to the Z-Turbo while installed in the z420?

In the meantime I also tried cloning the Z-Turbo to a Samsung 850 Evo- which produced the same error message. As It has a C: drive whenever I put it in a system, it tried to boot from it, so I'll have to reformat it running on Win PE.

Thanks!

BambiBoom

CAD / 3D Modeling / Graphic Design:

HP z420 (2015) (Rev 3) > Xeon E5-1660 v2 (6-core @ 3.7 / 4.0GHz) / 32GB DDR3 -1866 ECC RAM / Quadro K4200 (4GB) / Samsung SM951 M.2 256GB AHCI + Intel 730 480GB (9SSDSC2BP480G4R5) + Western Digital Black WD1003FZEX 1TB> M-Audio 192 sound card + Logitech z2300 2.1 speakers > 600W PSU> > Windows 7 Professional 64-bit >> 2X Dell Ultrasharp U2715H (2560 X 1440)
[ Passmark Rating = 5581 > CPU= 14226 / 2D= 838 / 3D= 4694 / Mem= 2777 / Disk= 11559] [6.12.16] Single-Thread Mark = 2098
[Cinebench R15 > CPU = 1031cb / Single Core = 142 cb / OpenGL= 127.39 fps / MP Ratio = 7.24x] 3.2.17
[FryBench: 3:24 /Efficiency 2177.13] 3.11.17

Analysis / Simulation / Rendering:

HP z620 (2012) (Rev 3) 2X Xeon E5-2690 (8-core @ 2.9 / 3.8GHz) / 64GB DDR3-1600 ECC reg) / Quadro K2200 (4GB) + Tesla M2090 (6GB) / HP Z Turbo Drive (256GB) + Samsung 850 Evo 250GB + Seagate Constellation ES.3 (1TB) / Creative Sound Blaster X-Fi Titanium PCIe sound card + Logitech z313 2.1 speakers / 800W / Windows 7 Professional 64-bit > > HP 2711x (27" 1980 X 1080)
[ Passmark System Rating= 5675 / CPU= 22625 / 2D= 815 / 3D = 3580 / Mem = 2522 / Disk = 12640 ] 9.25.16 Single Thread Mark = 1903
[ Cinebench R15: CPU = 2209 cb / Single core 130 cb / OpenGL= 119.23 fps / MP Ratio 16.84x] 10.31.16
 
Solution
Solved!


‎Good Afternoon,

The difficulty with GPT partitioned drive booting on the z420 was solved quite easily. The drive had to ve converted from GPT to MBR. However, I always bleieved that soing so would obliterate all the files. But, using Easeus Partition Master > right clicking on the Drive number containing the C: partition abd then "Apply" on both the Z Turbo and Samsung 850 EVO converted them from GPT to MBR without loss. These then booted with out a Legacy BIOS conflict. So the z420 3D modeling workstation and the z620 simulation /rendering system have matching hard drives. The Z turbo drive had very good performance in the z620- 13460 on Passmark. That's as good as a number of NVMe drives.

The z420 is an...


13thMonkey,

Well, actually it worked perfectly- until I added another drive to the system,..

I have thought of trying a Samsung 950 Pro- which has a legacy boot feature, but how about this:

SAMSUNG 950 PRO M.2 2280 256GB PCI-Express 3.0 x4 Internal Solid State Drive (SSD) MZ-V5P256BW > $399.95

whereas:

Hp Z Turbo 256 Gb Internal Solid State Drive - Pci Express - Plug-in Card > $226.49

And most importantly, the Z Turbo is already purchased and had a full day of setup.

Cheers,

BamibBoom
 
Solved!


‎Good Afternoon,

The difficulty with GPT partitioned drive booting on the z420 was solved quite easily. The drive had to ve converted from GPT to MBR. However, I always bleieved that soing so would obliterate all the files. But, using Easeus Partition Master > right clicking on the Drive number containing the C: partition abd then "Apply" on both the Z Turbo and Samsung 850 EVO converted them from GPT to MBR without loss. These then booted with out a Legacy BIOS conflict. So the z420 3D modeling workstation and the z620 simulation /rendering system have matching hard drives. The Z turbo drive had very good performance in the z620- 13460 on Passmark. That's as good as a number of NVMe drives.

The z420 is an experiment as the first office system having are no mechanical drives- only the Z Turbo and an Intel 730 480GB.

The data only drives can be GPT which does have the advantage of having each partition use separate partition configuration. There can be as many partitions as needed as small as 1MB to over 2TB for those with a lot to say. If the file structure fails on one partition, the others are still accessible as compared to MBR where the entire drive is affected.

Cheers,

BambiBoom
 
Solution