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I'm using the vSphere client. When I create a new Virtual Machine I have a selection drop-down to choose the OS version. Except 32bit and 64bit version which I understand (because it's hardware related), I am wondering what difference does it make for VMware if I choose a specific version rather than another.

Example:

What difference does VMware if I choose RedHat 5 or RedHat 6? Does hardware look different? Is it just for information purpose? Why vmWare even has to know what operating system the guests are running on?

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VMWare chooses sane defaults for what abstracted hardware it presents to the OS.

It chooses those hardware abstractions that have good drivers available in the OS you selected.

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  • Sounds reasonable. – SamK Sep 28 '11 at 12:16

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