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1, Intel CPU is VT - X, AMD CPU is AMD -v
2, the BIOS and UEFI setting method is slightly different, like AMD motherboard UEFI VT options within the overlocking, hidden deep
3, the Windows system is limited by the hyper - v, may also have to disable
4, some of the motherboard and CPU does not support VT, check buy
5, virtual machine and the container will use VT, without open VT performance will decline, caton, accounts for resources, can only use 32 bits, and so on