Hot Remove a VMDK from LIVE LINUX Virtual Machine

If you want to remove an extra VMDK from a Linux VM,you need to follow these steps.

First you need to unmount the /dev/sdb1:

umount /dev/sdb1

Remove the /disk2 folder:

rmdir /disk2/

Remove the entry from the /etc/fstab:

nano or vi /etc/fstab

remove the following line:
/dev/sdb1               /disk2                  ext2    defaults        1 2

Delete the device:

echo 1 > /sys/block/sdb1/device/delete

Remove the VMDK: