Too many startup disk options

[Sangoma]

Hi,

When I use the option key to see my startup options I see 2 Windows possibilities. In settings, and from Windows Bootcamp Assistant, I only see 2 (OS X and Bootcamp).

Prior to this I had installed Windows 10, and reverted to Windows 7. I suspect that I have confused a boot record or something. How do I get back to seeing the correct partitions?

Thanks

 

[Bomb Bloke]

Shot-in-the-dark guess, but if you boot into Windows 7 and check out msconfig (type it into the Run dialogue you should get via Cmd + R), do you see the extra entry there?

 

[grahamperrin]

It will help to know how disks are partitioned.

In Terminal, please run the following command. Then copy the output, paste it to this topic as code (the # button in the advanced editor).

diskutil list

 

[Sangoma]

This is what diskutil says:

/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 872.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data BOOTCAMP 127.0 GB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *872.0 GB disk1
Logical Volume on disk0s2
CC28B2C1-F847-44A9-8678-BC93D662EA0E
Unlocked Encrypted


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Shot-in-the-dark guess, but if you boot into Windows 7 and check out msconfig (type it into the Run dialogue you should get via Cmd + R), do you see the extra entry there?

Thanks, but no extra enty here.

 

[grahamperrin]

This is what diskutil says: …

For clarity (as code):

/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage                         872.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
   4:       Microsoft Basic Data BOOTCAMP                127.0 GB   disk0s4
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           *872.0 GB   disk1
                                 Logical Volume on disk0s2
                                 CC28B2C1-F847-44A9-8678-BC93D662EA0E
                                 Unlocked Encrypted

 

[Bomb Bloke]

Well that doesn't look to be anything out of the ordinary.

These two Windows options you see - do they actually behave any differently from each other when you select them, or do they both simply boot to the one install?

 

[Sangoma]

Well that doesn't look to be anything out of the ordinary.

These two Windows options you see - do they actually behave any differently from each other when you select them, or do they both simply boot to the one install?

Unfortunately, they behave differently. One of them is a defunct Windows 10 install. It just crashes. It is also, unfortunately, the one that OS X selects as the alternative in the 'Starup Disk' in system settings.

I can get to the functional Windows 7 install without problem if I use the Option key at startup.

Both show as 'Windows' on the startup screen. I only know that I must choose the first one.