The following partitions are created on the boot disk of ESXi.
|250 MB||Boot Bank|
|250 MB||Alternate Boot Bank|
|110 MB||Coredump. Not used since ESXi 5.5. It exists for backward compatibility|
|2.5 GB||Coredump. Introduced in ESXi 5.5, required for hosts with huge RAM|
|286 MB||Store. Used for storing VMware tools etc..|
|4 GB||Scratch. Persistent storage for log files, not created on USB and SD card installation|
|Remaining Space||VMFS, local datastore. Not created on USB and SD card installation|
Get partition table of the disk where ESXi is installed:
esxcli storage core device partition list partedUtil getptbl /vmfs/devices/disks/ESXi_install_disk
The size of a partition is (End Sector – Start Secore) * 512 bytes.
Check active coredump partition:
esxcli system coredump partition list
Get a list of mounted filesystems. The boot partition and coredump partitions will not be mounted.