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Precision Tower 3620: unable to install Catalina


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I've the same pc configuration as listed here but installation doesn't start.

First I've formatted usb, downloaded Catalina image,prepared usb with 2 partitions.

used mountefi and copi on EFI partition your EFI.

insert usb into Precision, see Install Catalina os from usb with clover, but it remain in Apple logo

could you help me to solve this problem?


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Please check and post your system’s specs because:

  1. nVidia Quadro K620 is Maxwell and therefore unsupported beyond High Sierra (with which it requires the nVidia Web Driver).
  2. Intel HD500 graphics is a low-end mobile iGPU of low-end Apollo Lake SOC platforms and unsupported under macOS. It cannot be what’s fitted to a Skylake workstation such as the Precision Tower 3620. 'should be something more like Intel HD530 (i3/i5/i7 Skylake CPU) or HD P530 (Xeon E3-12xx v5 Skylake CPU).


Once you know what hardware you have, which is a pre-requisite, you may consult this thread:



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