libguestfs-tools-c, which was installed when I set up the Linux VM server, can mount VMWare and Hyper-V disks.

[root@server /data/Virtual Machines/_Backup/VMWare/Win - Copy/]# guestmount -a WinHardDisk.vhd -m /dev/sda1 --ro /mnt/vhdx/
[root@server /data/Virtual Machines/_Backup/VMWare/Win - Copy/]# ls /mnt/vhdx/
AUTOEXEC.BAT COMMAND.COM FRUNLOG.TXT MSDOS.SYS 'Program Files' SETUPXLG.TXT VIDEOROM.BIN
BOOTLOG.PRV CONFIG.SYS IO.SYS 'My Documents' RECYCLED SUHDLOG.DAT WINDOWS
BOOTLOG.TXT DETLOG.TXT MSDOS.--- NETLOG.TXT SETUPLOG.TXT SYSTEM.1ST WUTemp
[root@server /data/Virtual Machines/_Backup/VMWare/Win - Copy/]# umount /mnt/vhdx