2ssd dual boot windows10 and centos7

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nccer
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Joined: 2018/01/16 06:59:39

2ssd dual boot windows10 and centos7

Post by nccer » 2018/01/16 07:21:41

I have windows10 on my first disk.Today I bought another ssd and installed centos7 on it.
To make sure that I will not lost my windows10 when I formate the centos7,I removed my first disk and then installed the second disk and centos7.
when finished, I install both 2 disk and boot the centos7,login as root
and run grub2-mkconfig -o /boot/grub2/grub.cfg.
The system detected windows10 and updated the grub.cfg.
Until then,things sound like ok,but I did't find the windows10 entry in grub2 menu when I reboot the computer.
Anyone can help me whith this.
Think you.

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TrevorH
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Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: 2ssd dual boot windows10 and centos7

Post by TrevorH » 2018/01/16 09:00:22

You say you ran grub2-mkconfig and it found windows? What did you run and where did you write the output to? Is your system using UEFI or Legacy BIOS?
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

owl102
Posts: 413
Joined: 2014/06/10 19:13:41

Re: 2ssd dual boot windows10 and centos7

Post by owl102 » 2018/01/16 09:43:54

nccer wrote:grub2-mkconfig -o /boot/grub2/grub.cfg.
My guess: You have installed CentOS 7 in UEFI mode. For UEFI, this is not the right destination for grub.cfg, so the file you have written this way is ignored by Grub.

See also: https://access.redhat.com/documentation ... oot_loader
German speaking forum for Fedora and CentOS: https://www.fedoraforum.de/

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