Installed CentOs 8 on top of windows 10

[mehdithemaker]

Im so sorry if I can't ask here
Im a beginer with linux and thoughet that Centos will be installed with my win10 like Ubunto on dualboot automaticlly but it wasn't the case, now I don't know how to open windows10 and I can't accees my second drive I keep getting thid error when I try to accres it:
error mounting /dev/sda4

[TrevorH]

Start by telling us how you did the install? Did you use a USB stick and if so, how did you create it?

[tunk]

And when you get it running, it may be a good idea to run
it as a virtual machine, e.g. with virtualbox. Then you won't
run into this problem again.

[mehdithemaker]

Start by telling us how you did the install? Did you use a USB stick and if so, how did you create it?

I fixed my issue by re-installing win10 again and deleting CentOs partition
I installed it using an usb stick and the software RUFUS

[mehdithemaker]

And when you get it running, it may be a good idea to run
it as a virtual machine, e.g. with virtualbox. Then you won't
run into this problem again.

Yes, it was my bad

[c00ter]

I don't want to discourage a Linux beginner, but perhaps CentOS is not the best operating system for daily desktop use. Not for a beginner. There are many, many more distributions that provide a level of hand-holding that make them more comfortable for a beginner's use. Particularly with GUIs. Particularly with dual-booting Windows and setting up GRUB.

If learning/using RPM-based distributions, *Fedora* would be a good recommendation, though it is a tad more advanced than some. It provides the upstream for future Red Hat/CentOS releases.

And there are many others.

Also: Please read the release notes/wiki pertaining to the USB ISO creation.

regards

[TrevorH]

I installed it using an usb stick and the software RUFUS

Which probably explains the problem you had. With certain options, rufus breaks our isos and makes them boot in legacy BIOS mode on UEFI mode hardware and the previously installed UEFI operating systems are lost. Se our wiki page for details of what others things NOT to use!

[mehdithemaker]

I don't want to discourage a Linux beginner, but perhaps CentOS is not the best operating system for daily desktop use. Not for a beginner. There are many, many more distributions that provide a level of hand-holding that make them more comfortable for a beginner's use. Particularly with GUIs. Particularly with dual-booting Windows and setting up GRUB.

If learning/using RPM-based distributions, *Fedora* would be a good recommendation, though it is a tad more advanced than some. It provides the upstream for future Red Hat/CentOS releases.

And there are many others.

Also: Please read the release notes/wiki pertaining to the USB ISO creation.

regards

I didn't chose centOs I'm a student and for my final project I have to configure
a server and my mentor want me to use it
This is my first experience out of laptops and windows I have no idea about sys administration

[TrevorH]

Why don't you install in a VM instead? VirtualBox is free and runs on Windows and you can install CentOS in that without touching your existing windows at all.

[mehdithemaker]

Why don't you install in a VM instead? VirtualBox is free and runs on Windows and you can install CentOS in that without touching your existing windows at all.

You can't install windows on a Dell poweredge emc r440 as I think
that's why I installed centOs