@ gcsydney, .......
My apologies. The problem with the install is the very abnormal 2nd swap partition with an over-large size of 125.9GB, ie not with the swap dev file system. Normally, an installed Linux system has only ONE swap partition that is about 2X RAM size or same size as RAM.
... So, you likely need to reinstall LM by using the manual "Something else" install method, deleting all the Linux partitions to create a new free space for a repartition and reinstall.
For some guidance on dual-booting LM alongside Win 10/8.1 in UEFI and GPT-disk mode, please refer to .......viewtopic.php?f=42&t=163126
(dual-booting UEFI computers)https://sites.google.com/site/easylinux ... ct/windowshttps://sites.google.com/site/easylinux ... nt-installhttps://www.tecmint.com/install-linux-m ... uefi-mode/
(note step 18)viewtopic.php?f=42&t=122276
(manual partitioning Tutorial)
Ensure that Secure Boot, Fast Boot and CSM are disabled in BIOS setup, Fast Startup is disabled in Win 10/8.1(>Control Panel >Power options), the Live LM media(DVD or USB-stick) is booted in UEFI mode in BIOS setup.
To dual-boot, you only need to pre-shrink the Windows partition if you intend to use the manual "Something else" install method. The automatic "install LM alongside Windows Boot Manager" method will be followed by the LM Installer auto-partitioning the disk and auto-installing the Linux Grub bootloader onto the Windows ESP. Only a root / and swap partition will be auto-created with a total default size of about 20GB. The user will be given the option to increase this default size by moving a slider on the colored Partition table, subject to the maximum available free space in the Windows partition.
For the "Something else" install method, ensure that the "Device for boot loader installation" is the Windows EFI System Partition(= ESP = fat32/about 104MB) which is usually dev/sda1.