One HDD with one shared NTFS, one Windows, and three linux partions?

[Dáire Fagan]

You reinstalled Windows in BIOS/MBR mode.
Windows does not correctly convert a gpt partitioned drive to MBR. It leaves the gpt backup partition table, so Linux tools see both MBR primary and gpt backup and get confused on what you really want.
If you do not want to reinstall in UEFI/gpt mode, you have to remove backup gpt data.

FixParts is the easiest way to remove the stray GPT data. GPT fdisk (gdisk or sgdisk) can do it, but the procedure's a bit more involved.
http://www.rodsbooks.com/fixparts/

Hi, I have already completed that tutorial, please see where I mentioned it above. After the tutorial GParted did recognise the Windows partitions but it gave the warning about 00xE - also, see above.

I did not know I was supposed to install in UEFI mode. I have read it is faster booting which appeals. If I am better off with Windows installed in UEFI for the system I have described, multiple linux installs etc, do you know a good way to convert the Windows MBR install to UEFI or can you tell me what you think of this guide?

https://social.technet.microsoft.com...n-to-uefi.aspx

OR if you recommend a completely new Windows install can you please confirm I just delete all partitions with GParted then install UEFI following this guide:

http://www.eightforums.com/tutorials...ndows-8-a.html

[oldfred]

With fixparts the entire purpose is to erase gpt data, so you have to say yes.

I have never installed Windows 8, so do not know. Since partitioning is so different I would think a new install would be better. Only if you had lots of data or configurations may conversion be a consideration.