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okay at first i've installed and used ubuntu days ago but i had to uninstall it because of partition issue... i was just trying to switch from windows 10 to ubuntu so i uninstalled windows completely then i tried to install ubuntu 18.04 from live usb but after the boot my cpu has high usage by (systemd-journal ... rsyslogd ... kworker/1:2 -e and +e) ive been trying to disable or restart the services but it doesn't work and thats why i cant install ubuntu cause it crashes during installing ... also i've tried the (pci=nomsi) in grub but it gives me 2 errors ...first pci=nomsi is unknown and the second you need to load the kernel first ... please help me fix this. thanks

saeed ghozatlou
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  • What brand/model system? What video card/chip? Some require boot parameters like the pci=nomsi you tried. But if error, did you add it to grub in correct place. It should replace quiet splash on linux line, like nomodeset, scroll down for grub with UEFI boot example: https://askubuntu.com/questions/162075/my-computer-boots-to-a-black-screen-what-options-do-i-have-to-fix-it & UEFI black grub menu https://help.ubuntu.com/community/UEFI Also shows Windows 10 screens or similar to Windows 8 https://askubuntu.com/questions/221835/installing-ubuntu-on-a-pre-installed-windows-10-with-uefi – oldfred Aug 03 '19 at 19:57

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Boot from the live usb and choose "Try Ubuntu without installing". When Ubuntu is up and running run gParted (type "gparted" in a terminal) and format an ext4 partition on your hard drive. Then reboot from the live usb and choose "Install Ubuntu" and install 18.04 onto the ext4 partition you have created.

SteveInBavaria
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  • thanks for your answer ... but that is not working for me because that wouldn't fix the cpu usage and thats why i can't install...plus i have no partition on my hard disk cause i couldn't install at all to make any partition... so 980 GB free :/ – saeed ghozatlou Aug 03 '19 at 18:16