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10-20-2020 07:15 AM
Product: HP Z820 Workstation
Operating System: Microsoft Windows 7 (64-bit)
Hi there. I'm trying to install Windows 10 Pro 64 on a new HDD in my Z820 workstation, however none of my internal hard drives are being detected by the Windows 10 installer. The drives are also not showing up in BIOS. However, my Windows 7 Pro 64 system still boots up with no problems - and when Windows 7 has started, all my internal drives show up correctly in Device Manager etc. Could anyone offer some solutions please? Many thanks.
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10-20-2020 10:26 AM - edited 10-20-2020 10:28 AM
windows 10 pro, contains all required drivers for the z820, no others are required for a OS install
if the bios does not see the drive then it should be obvious that windows will also not see it as the bios runs before the OS and is responsible for detecting attached hardware, and presenting this list to the OS during it's install
failure to detect in bios is limited to only a few things
For SATA devices
no power to drive, or bad SATA cable
bad or bios disabled sata /SAS port (the z820 has onboard SATA and a onboard LSI SAS/SATA controller)
SAS drive instead of SATA drive connected
for M.2 devices
bad SSD, or trying to us a SATA ssd in a nvme only M.2
bad M.2 carrier if using a pci-e card
bad pci-e slot
wrong pci-e slot, most m.2 nvme ssd's require a x4 capable slot and will not work in a x2 slot
for the z820 the SATA boot ssd/HD needs to be in one of the TWO SATA 6GBps ports, that are next to the 5 white Intel "SCU" sata 3GBps ports
the 7 white LSI SAS/SATA ports along the bottom should not be used for booting and the onboard LSI boot rom should be disabled in the z820 bios
last, the bootable drive should be the topmost device shown in the bios, and legacy and UEFI needs to be enabled in the bios
i recommend resetting the bios to factory defaults, and the only disabling the LSI and onboard nic boot roms
10-23-2020 11:51 AM
the z820 only has TWO SATA 6GBps ports, all others are 3GBps this includes the 7 LSI ports along the bottom
HP recommends connecting boot drives to the fastest port, instead of the slower ones
win 10 has driver support for the two 6GBps as a bootable/installable device
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