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Starting with ESXi 7.0 the partions layout has totally changed, compared to previous versions.

And also the disk requirements have changed… you cannot install anymore on a very small disk (less than 4 GB) and the minimum required size is 32 GB. A big change, considering that before was possible install ESXi with less than 1 GB!

ESXi version 8 basically has the same partitions layout of version 7.

The disk initialize in GPT and is partitioned in the following way:

  • 1. EFI System -> 100 MB (100 blocks)
  • Free space for the remaining first 2 GB
  • 5: Basic Data for the primary boot bank -> 4 GB (4094 blocks)
  • 6: Basic Data for the alternative boot bank -> 4 GB (4094 blocks)
  • 7: VMFSL -> 23.9 GB (24473 blocks)
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