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 Unable to expand an existing VMFS datastore

Nadeem Khan's profile image
Nadeem Khan posted Mar 22, 2025 02:38 PM

Hi,

I'm new here and this is my 1st time posting a question anywhere in an online blog so I hope I'm at the right place and in the right section!  Please direct me to right section if I'm not...

We are a small company with just a single Dell server running ESXi7.  I added another drive to expand the existing space but getting the error 'failed to expand VMFS datastore' (screenshot below).  It shows the added free space but won't let me expand it.  I used the terminal session to run the command 'partedUtil getptbl /vmfs/devices/disks/' which shows the error (PuTTY screenshot below).  Is it ok for me to run the 'partedUtil getptbl /vmfs/devices/disks/' with 'msdos' option to fix the error without destroying or repartitioning the data on the existing volume?