Multiple Windows on Startup Items - How to Remove I currently have 2 SSDs on my Macbook Pro 2010 13", on which I have successfully installed MacOS &amp; Ubuntu on 1 SSD, and Windows on the other. All is working fine and successfully installed. The issue now only, after I installed Ubuntu, I have multiple Windows drives showing up which created double options. One of these drives are totally useless. How do I remove this so it's back to the original 3 options as it should be? (The first Windows icon from the left is the useless one). 
Thanks in advance for anyone that willing to help or advise.




Below my diskutil list

/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *250.1 GB   disk0
   1:               Windows_NTFS BOOTCAMP                250.1 GB   disk0s1

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *240.1 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                 Apple_APFS Container disk2         151.8 GB   disk1s2
   3:       Microsoft Basic Data                         7.9 GB     disk1s3
   4:       Microsoft Basic Data                         79.9 GB    disk1s4

/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +151.8 GB   disk2
                                 Physical Store disk1s2
   1:                APFS Volume dn1122                  13.9 GB    disk2s1
   2:                APFS Volume Preboot                 24.5 MB    disk2s2
   3:                APFS Volume Recovery                512.1 MB   disk2s3
   4:                APFS Volume VM                      4.3 GB     disk2s4


***sudo fdisk /dev/disk1
Disk: /dev/disk1    geometry: 29185/255/63 [468862128 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE    0   0   1 - 1023 254  63 [         1 -     409639] &lt;Unknown ID&gt;
*2: DA 1023 254  63 - 1023 254  63 [    409640 -  296551216] &lt;Unknown ID&gt;
 3: 82 1023 254  63 - 1023 254  63 [ 296962048 -   15362048] Linux swap  
 4: 83 1023 254  63 - 1023 254  63 [ 312586240 -  156012544] Linux files*
Remove Windows from Startup Manager

You at least need to remove the hybrid partitioning on disk1. I assuming this drive would be /dev/sda under Ubuntu. If not, then make the appropriate substitution. The command below can be entered in a Ubuntu terminal window to list the drives and partitions.

sudo lsblk -e7


You can use gdisk included with Ubuntu to remove the hybrid partitioning. This is a interactive command. The command and user input is given below.

sudo gdisk /dev/sda
x
n
w
y


How to change EFI Boot to Ubuntu (Optional)

I noticed you have a icon for Ubuntu, but are still using the default label.

Enter the following commands in a macOS Terminal application window.

sudo diskutil mount disk1s1
sudo bless --folder /Volumes/EFI/EFI/Boot --label Ubuntu
diskutil unmount disk1s1


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How to Restore Hybrid Partitioning to the Windows Drive.

I assuming this drive would be /dev/disk0 under macOS. If not, then make the appropriate substitution. The command below can be entered in a Terminal application window to list the drives and partitions.

diskutil list


You can use gdisk installed in macOS to partially convert disk0 from a GPT to MBR partition table. This is a interactive command. The command and user input is given below.

sudo gdisk /dev/disk0
r
h
1
n
07
y
n
w
y


Next, use the following commands to finish the conversion.

sudo fdisk -e /dev/disk0
s 2
0
q
y
diskutil unmountdisk disk0
gpt destroy /dev/disk0


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