hello,
laptop asuspro 2520j.
i have 1 TB hdd,with one primary and extended partition + 40 GB of free space,
first i install win 10,my current drive is MBR.
then i try to install the centos 7 64bit-1511,i choose the automatic partitioning but when it tires to create the /boot/efi, an error popup,
“an unknown error has occurred”
file usr/lib/pyton2.7/site-packages/blivet anaconda ...
......
....

i tried the manual partitioning,it was not successful.
so what should i do !
thanks in advance.

fwiw, I recently installed centos7.2 as a dual boot with windows 10 secure boot on a celeron-based micro desktop, and had no problems. It seems to me I manually did the partitioning during the install, maybe there is something with auto partitioning.

Hold everything, z99. If your drive is MBR, then Win 10 is installed in MBR/msdos/Legacy/CSM mode. Trust me, if that is true, you do not want to install a second OS in UEFI mode - that will not work.
First, verify the mode of Windows 10 -
Boot into Windows and check using these instructions -
Press the Windows + R keys to open the Run dialog, type msinfo32, and press Enter.
In the right pane of System Summary in System Information, see if the BIOS Mode value says Legacy or UEFI.


Post the result so that you can get the correct instructions.

1 members found this post helpful.

Hi thanks for helping,
bios mode is legacy,
so should i create partitions with win 10 media installation !

That is good. As I said, with Windows in Legacy mode, linux should be installed in Legacy mode also - not UEFI.
No, you should not create partitions for linux using Windows 10. You should leave unused (unallocated) space, and then create your linux partitions with the gparted program, or with the installation program.
You have your computer's boot settings wrong - the installation DVD or USB is booting in UEFI mode. That is not good.
Change your computer's boot settings to boot centos in Legacy (CSM) mode.
Verify that you have booted in Legacy mode with the command: This tutorial can be applied to Windows 10, as well as Windows 7
Dual boot: Windows 7 and CentOS 7 - Tutorial

Thanks @TxLonghorn,
i have booted centos 7 in legacy mode too,but it couldn't create partition.
i think the better way is to create partition in a gpt file system with windows 10,and then install centos,
so what do you think ? is this a good way !
if so,how can i create gpt file system !

You can create a GPT partition table using the gparted program. Click on the Device menu in gparted > Partition table.
That will require you to re-install Windows 10 after you do that, and then install centos in UEFI mode.
That is a lot of work. Why do you want to switch to GPT?

because when i installed linux in legacy mode,i had the same problem,couldn't create partition,
so is should fire up GPARTED then Click on the menu item Device and select Create Partition Table,choose GPT,
then create a partition for windows and a free space to install linux later.
is this ok !

That is correct for a switch to GPT partitioning and UEFI installation.
However, the way to create more partitions using a msdos partition table is to create an extended partition, which can contain several logical partitions.
This allows you to create all the linux partitions you want.
https://help.ubuntu.com/community/Ho...itioningBasics

Solved
the problem was with the ISO of win 10,i download another one and create a bootable flash disk with Rufus http://www.windowscentral.com/how-cr...b-installation,and then create my partitions with windows during installation plus a free space for Linux,and everything is okay.
thanks for helping.