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SSD disappears after standby/shutdown/crash
http://forum.hddguru.com/viewtopic.php?f=10&t=41988
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Author:  omnimox [ December 18th, 2021, 19:33 ]
Post subject:  SSD disappears after standby/shutdown/crash

I have 3 SSD. A Samsung EVO 480, EVO 860 and EVO 870, All connected per SATA cable. This problem only affects the 860 and 870 which are V-Nand.
The drives are all fine for sure, they work in other rigs and usb adapters. Samsung support checked one and all the diagnostic tools look fine as well.

The problem:
When I start my PC (this can be from standby, full shutdown or crash) those 2 drives completely disappear, so not showing up in bios or anywhere.
I can bring them back while in OS by just replugging their SATA power.

More Info:
The problem does not happen after restart, when power is never taken away from the drives. Also not in energy saving mode (some alternative standby)
Bios, firmware, chipset and all is up to date.
Tried different wires and slots.
The problem used to happen only rarely some months ago but now its pretty much at any start

My system:
Win 10
MSI x470 gaming pro
Ryzen 7 2700X
16GB Ram
Radeon RX Vega 56
be quiet, Straight Power 11 850W
Fireface UC
Some PCI usb controller
2 internal HDD, 1 external

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