Installing Windows and Ubuntu dual-boot
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Installing windows and ubuntu dual-boot
Troubleshooting
Sometimes while trying to install Windows and Ubuntu dual-boot Ubuntu may not show Windows partitions properly. This happens if partition table has GPT signatures but in reality is an msdos partition. These issues are caused by changing boot from legacy to UEFI after OS installations. To solve this problem when there is no important data and entire disk can be wiped use:
parted /dev/sda mklabel msdos
This creates appropriate valid msdos partition table on /dev/sda or other specified device. Then Windows can be installed on the device followed by Ubuntu without any problem.