Clean install of Windows 10 Retail (when it comes out)

I posted the following thread on the Windows forums but I think the Lenovo Community will help me better, I'd also like to specify that even if Windows 10 Retail version hasn't come out and Technical Preview is not enough to be able to help me, let's try to imagine Windows 10 will work in the same way as Windows 8.1 ok?
I bought a laptop with windows 8.1 pre-installed so I'm pretty sure it is UEFI-enabled, now I want to install Windows 10, a clean install, which means I want to delete all the partitions, but when I was looking through the Disk Manager and GParted (I also have Ubuntu, but uninstalling it is no problem, I already know how) I noticed there are a few partitions that I'm not sure if it's safe to uninstall, specially the EFI partition, this is how it appears in Disk Manager:
Recovery Partition.
EFI System Partition.
OEM Partition.
Windows Partition.
Lenovo Partition.
Recovery Partition.
This is what GParted shows after installing Ubuntu:
sda1 WINRE_DRV (Recovery)
sda2 SYSTEM_DRV (EFI)
sda3 LRS_ESP (OEM)
sda4 unkown (if possible I'd like to know what could this be.
sda5 Windows
sda8 Ubuntu
sda6 Lenovo
sda7 PBR_DRV (Recovery)
Main question is: Is it safe to completely remove all the partitions (including EFI and Unknown) or could that cause problems with the UEFI boot? Will Windows 10 TP or Retail after it comes out auto-creates the EFI and WINRE partitions (and Unknown)? Or do I have to do it when I'm installing like Ubuntu?
What is the unkown partition?
I hope you can fill me with knowledge in this area and thanks a lot for your attention
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You can find answer's to all your Win 10 question's here: http://www.tenforums.com/windows-10-forums/

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Microsoft (R) Windows Debugger Version 6.3.9600.17237 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\Ken\Desktop\120414-8515-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
************* Symbol Path validation summary **************
Response Time (ms) Location
Deferred SRV*f:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: SRV*f:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 8 Kernel Version 9600 MP (8 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 9600.16384.amd64fre.winblue_rtm.130821-1623
Machine Name:
Kernel base = 0xfffff801`1981d000 PsLoadedModuleList = 0xfffff801`19ae49b0
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Loading User Symbols
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Use !analyze -v to get detailed debugging information.
BugCheck FC, {ffffd000217aaa00, 8000000104112963, ffffd000217aa7a0, 2}
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ATTEMPTED_EXECUTE_OF_NOEXECUTE_MEMORY (fc)
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DEFAULT_BUCKET_ID: WIN8_DRIVER_FAULT
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PROCESS_NAME: System
CURRENT_IRQL: 0
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Could anyone of you please who has a clean install of Windows 8.1 on the SSD drive look at some settings of certain services (below)?

Hi everyone,
could anyone of you please
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Moderator comment: New thread created. Subject edited to match. Was: Re: Lenovo Helix - Clean Install of Windows 8.1 - Best way to load Software and Drivers
Solved!
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Good day and welcome to the community.
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Help with Performing a Clean Install of Windows 8.1

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