I'm trying to set up a dual boot of Windows 7 alongside Ubuntu 18.04 on my HP Envy 4 1030-CA laptop, and keep all Windows 7 data as well.

The Ubuntu installer doesn't recognize Windows 7 as an operating system, nor can I use the Something else option in the Ubuntu installer and find the 101.58 GB Unallocated space on Disk 0 (see below screenshot) to install Ubuntu to that.

Windows Disk Management Screenshot
(Click image to enlarge)

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  • Welcome to Ask Ubuntu. I would suggest using 'something else' and manually partition as you want (or use what you're picture shows. You can't use but don't say why? If there is a problem, some details are useful, especially for us to help. If you've problems with your install media; did you verify download? or check integrity of write to thumb-drive or install-media? – guiverc Jan 13 at 5:10

This question isn't a good duplicate of this question because it's too complicated, however its accepted answer at least has an explanation of what's going on. You should never create a partition using the Windows tools with the intention of using it in Linux.

You wouldn't have this problem if you used GParted free partition editor instead of Windows tools to create the unallocated space for Ubuntu 18.04. Since you already have 101.58 GB unallocated space on Disk 0, use GParted to create a new partition formatted as ext4 in the 101.58 GB unallocated space. Then Ubuntu installer will be able to recognize the 101.58 GB partition that you have created for Ubuntu 18.04, and you can install Ubuntu 18.04 in this partition alongside Windows 7. For new installations of Ubuntu 18.04 the Ubuntu installer will install Ubuntu by default in a single ext4 partition which contains a swap file instead of the old-fashioned swap partition.

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