Windows 10: format EFI, Recovery partitions windows 10 in clean install?

I'm going to do a clean install of Windows, but during the installation I want to format all the partitions and then delete them, but I have some concerns! As you can see in the picture below, I have 5 drivers, three of which seem to be vital and important EFI system partition and the other two are recovery partitions. The partition that is related to recovery and has a volume of 900 megabytes is related to WinRE tools, and the other recovery partition that is 21 gigabytes is related to BIOS_RVY.. If I delete them, will there be any problem? Will they be created automatically after installin

:)

 

Download Windows 10 TH/RS

For the convenience of not having to use the installation media for startup repairs. But you should be able to use your installation media to do whatever the recovery partition does(including startup repairs). AFAIK. I could be wrong about that though.

I'm not sure if I follow you there. But if you clean install Windows 10 there will be at least 3 partitions.

• (EFI System Partition)
• (Primary Partition)
• (Recovery/OEM Partition)

If you install from an OEM installation media there might(should?) be 4 partitions. Since there might(should?) be a Recovery partition and an OEM partition.




Back on topic...

Download May 8 CU KB4103721 x64 (326.5MB)

Brings system to 17134.48

List of improvements and fixes found here.

 

Help on Partition 1TB HDD into GPT format

Hi people, I am planning to convert a 1TB hdd into GPT format. Here's how I want to partition the disk: 450MB for WinRE, 100MB for EFI, 128MB for MSR, 5GB for Recovery, 100GB for windows and then the rest are for more partitions.
My question here, are these partion sizes okay for an UEFI Windows 10 installation? Especially, I cannot be sure how large the Recovery and WinRE, partitions should be. So some advice would be helpful.

 

Installing Windows Vista/7 on a GUID Partition Table

Background

GUID Partition Table (GPT) is a boot sector technology poised to replace the venerable Master Boot Record (MBR) principally because MBR has a maximum capacity of 2 TB for a single partition (some single disks have reached 3 TB). Installing Windows on a GPT is a bit tricky because Windows wants to default back to MBR. In order to force Windows on to a GPT, we have to pre-format the drive prior to Windows installation. You can do that during Windows setup using the console.

Requirements

• Windows Vista or 7 (must be 64-bit no matter which OS is used)
• A motherboard with EFI BIOS
• A means to EFI boot the Windows setup (I had to use a USB DVD drive on MSI Z77A-G65, the internal SATA Bluray drives didn't have an EFI option)

Instructions

• Boot into Windows setup using EFI. On the MSI Z77A-G65, it showed up as UEFI:USB-ATAPI DVD ... This will change according to your motherboard and how you are attempting to enter setup. This step is critical. Without booting into setup via EFI, only MBR is available to the setup. There's no easy way to tell from within setup if it is running via EFI or not.
• Once you have booted into setup, continue through the process as you would normally until you reach the dialog which shows you the available drives. Load a driver, if necessary, then press SHIFT+F10 to open the command prompt.
• In the command prompt, enter the following lines, pressing enter after each one. Note that the <id> field below is the disk ID that you want to format as GPT from the "list disk" command. If there's only one drive, <id> will likely be 1. Note: All data on the drive will be lost during this process. Make sure to select the correct drive.
  • diskpart
  • list disk
  • select disk <id>
  • online disk
  • attributes disk clear readonly
  • clean
  • convert gpt
  • create partition efi size=102
  • create partition msr size=32
  • create partition primary
  • format fs=ntfs label="Operating System"
  • assign letter=C
  • exit
  "online disk" and "attributes disk clear readonly" are likely to fail. Don't worry, they are only precautionary. Change the drive letter and label to whatever you want. Also, the above command (specifically "create partition primary") will consume all remaining space on the drive. If you want multiple partitions with fixed sizes, substitute what you want in place of "create partition primary."
• You may now close the command prompt and click on "Refresh" back in the dialog to choose where to install Windows. You should now see at least 2 partitions (I think Microsoft Reserved is hidden) and it will only let you install on a non EFI/MSR partition. Click on the primary partition and proceed with the installation as normal.
• Note that in the EFI BIOS after installing Windows via EFI, you can no longer directly boot the volume Windows is installed on. Instead, you must boot via "Windows Boot Manager" (on MSI Z77A-G65, it was "UEFI: Windows Boot Manager"). Keep that in mind if you wish to tweak the boot order.

Conclusion

That should do it. You should be in Windows with >2 TB of hard drive capacity available if you had more than 2 TB on the Windows partition. Congratulations being on the bleeding edge of technology! *Rockout :rockout: