How to get ESXi boot device of esxi host
If you need to see the current boot device of ESXi or from which device ESXi is running then follow below steps.
1. Enable SSH on ESXi host.
2. Login to ESXi server using root and its password.
3. Run below Command to get boot volume
#ls -l /bootbank | awk -F"-> " '{print $2}'
E.g output
[root@esxi01:~] ls -l /bootbank | awk -F"-> " '{print $2}'
/vmfs/volumes/50705ae3-b08ce25f-a1b8-bc56258253ad
4. Copy vmfs volume and run below command to get more details about volume.
#vmkfstools -P vmfsVolumeID
[root@esxi01:~] vmkfstools -P /vmfs/volumes/9999zs3-b08cjud5f-91b8-sljoiel76
vfat-0.04 (Raw Major Version: 0) file system spanning 1 partitions.
File system label (if any):
Mode: private
Capacity 261853184 (63929 file blocks * 4096), 90677248 (22138 blocks) avail, max supported file size 0
UUID: 9999zs3-b08cjud5f-91b8-sljoiel76
Partitions spanned (on "disks"):
eui.00b0504665428:5
Is Native Snapshot Capable: NO
5. From above command output copy the disks/partition UID and run below command to get device details.
#esxcli storage core device list | grep -A27 deviceID
[root@esxi01:~] esxcli storage core device list | grep -A27 eui.00b0504665428
eui.00b0504665428
Display Name: Local USB Direct-Access (eui.00b0504665428)
Has Settable Display Name: false
Size: 30436
Device Type: Direct-Access
Multipath Plugin: NMP
Devfs Path: /vmfs/devices/disks/eui.00b0504665428
Vendor: Cypress
Model: SDRAID
Revision: 0000
SCSI Level: 2
Is Pseudo: false
Status: on
Is RDM Capable: false
Is Local: true
Is Removable: true
Is SSD: false
Is VVOL PE: false
Is Offline: false
Is Perennially Reserved: false
Queue Full Sample Size: 0
Queue Full Threshold: 0
Thin Provisioning Status: unknown
Attached Filters:
VAAI Status: unsupported
Other UIDs: vml.0000000000766d68626133323a303a30
Is Shared Clusterwide: false
Is Local SAS Device: false
Is SAS: false
Is USB: true
Is Boot USB Device: true
Is Boot Device: true
Device Max Queue Depth: 1
No of outstanding IOs with competing worlds: 32
In above command you can see, this ESXi host is booted and running from USB device.
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