Get-mailbox
Get-mailbox | get-mailboxstatistics | ft displayname,totalitemsize
Get-mailbox | get-mailboxstatistics | sort-object totalitemsize –descending | ft displayname,totalitemsize
Source: Alex De Jong
Get-mailbox
Get-mailbox | get-mailboxstatistics | ft displayname,totalitemsize
Get-mailbox | get-mailboxstatistics | sort-object totalitemsize –descending | ft displayname,totalitemsize
Source: Alex De Jong
F11 at boot
Recovery console
Troubleshoot
Advanced Options
Startup repair
Source: Microsoft Answers