Installing cent0s

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TiltedIntuition1
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Joined: 2017/11/18 06:55:34

Installing cent0s

Postby TiltedIntuition1 » 2017/11/18 07:05:29

Hi everyone.

I've been using centOS for a while in a VM and recently decided to a full install on my main desktop. My hardware specs are as follows:
ryzen 7 1700x
gtx 1080 via hdmi output (not sure if relevant/if the problem is driver related)
corsair lpx 16gb
msi sli plus mobo
crucial 256gb (formatted to ntfs, i want this to be my centos drive)
crucial 256gb windows 10 (disconnected for cent installation - i read that dual boot has issues)

To install centOS i downloaded the "everything" iso.
I used rufus 1.8 to create the bootable USB.
shutdown computer, disconnect windows ssd
boot computer, select usb, cent os "test" or "install" gui appears
i select "install"
then the screen goes blank. i've waited hours with no changes.
at the moment i'm downloading a new copy.
my guess is that the new OS doesn't have graphics drivers, particularly since it mainly a server distribution...
any thoughts?

cheers

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TrevorH
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Re: Installing cent0s

Postby TrevorH » 2017/11/18 10:03:19

First, recreate the USB stick with something other than Rufus as we've now had several reports that this doesn't work, depending on what options you select. The best and recommended utility to use is the linux 'dd' command as this is guaranteed not to muck about with the contents of the iso image as it copies it.

Did you check the sha256sum of the iso file against the list published in the 7.4 release notes https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7 ?

You didn't need the Everything DVD, it does exactly the same as the ordinary DVD but is twice the size. It's intended for sysadmins aiming to set up a local mirror or use a kickstart file that allows for installation of packages that cannot be selected via the GUI. However it should still work.

Also, try using the basic graphics option off the initial Troubleshooting menu.
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TiltedIntuition1
Posts: 7
Joined: 2017/11/18 06:55:34

Re: Installing cent0s

Postby TiltedIntuition1 » 2017/11/19 04:19:31

Thanks for the reply Trevor.

I downloaded a new dvd version from an official mirror found on the website.

I used Terminal dd command to make the usb bootable with the following steps; first diskutil unmountDisk /dev/disk1 to unmount the disk, using "dd if=/path of iso of=/dev/rdisk1s1 bs=1m" where /dev/rdisk1s1 is the main partition of the usb. I'm also not sure what the 'r' in "rdisk" is for, just read it on a forum a while ago and it always worked. This appears to be successful, mac will no longer see the usb as initialised which suggests its bootable.

When i have the usb in my windows 10 machine, windows explorer reads the anaconda boot loader which is fantastic. I can conclude rufus is buggy and dd seems to work, but still no luck actually installing the system.

After booting into to the UEFI partition, centos tells me that my processor is not directly supported, all good, the following lines are posted:
[0.000000] tsc: fast tsc calibration failed
[0.028796] ignore bgrt: failed to map image memory
.... [ok] ....
[8.2180241] scsi 0:0:0:0: alua: not attached
then goes [ok]... for a few more things, then black screen again

Any further thoughts?

Also, i haven't checked the sha256sum hash value, i will at some point today and let you know.

edit: sorry for last message, not sure how I did that lol

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TrevorH
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Re: Installing cent0s

Postby TrevorH » 2017/11/19 10:25:23

You must write to the entire USB stick, not to a partition on it.
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TiltedIntuition1
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Joined: 2017/11/18 06:55:34

Re: Installing cent0s

Postby TiltedIntuition1 » 2017/11/19 10:59:02

Tried the same with the dd command pointing to /dev/disk1

literally no difference..

any other ideas?

TiltedIntuition1
Posts: 7
Joined: 2017/11/18 06:55:34

Re: Installing cent0s

Postby TiltedIntuition1 » 2017/11/19 11:05:43

trevor, does my monitor being on hdmi make any difference? such as the default output not being hdmi..

Since this is a server grade OS is a network install better?

TiltedIntuition1
Posts: 7
Joined: 2017/11/18 06:55:34

Re: Installing cent0s

Postby TiltedIntuition1 » 2017/11/19 11:21:29

my apologies for the spam.

After some further tweaking, my monitor is listed "out of range" and the install seems to be working

how do i change my output resolution from grub?

TiltedIntuition1
Posts: 7
Joined: 2017/11/18 06:55:34

Re: Installing cent0s

Postby TiltedIntuition1 » 2017/11/19 11:47:25

solution:

my graphics card has 3x HDMI, 3x display port and 1x dvi (i think its dvi) cable.

CentOS by default outputs to DVI.

Thanks again trevor!!