crashed on live usb install

[Aakrit]

i tried to reinstall Ubuntu from the live usb because i had it already installed, but didn't boot.

I have two hard drives, SSD and HDD. I installed ubuntu at the SSD, and when i was in the desktop, the file explorer didn't let me create a new folder. I changed the mount options, and wrote "/mnt/sda2 at the mount point. Then i restarted, and next thing i know is that the ubuntu bootloader didn't appear. I went to windows, checked that it was working, and then restarted. I doesn't find the ubuntu bootloader when pressing f12.

So, i tried to reinstall ubuntu, selecting the first option at the installer (replace ubuntu alongside windows) and this error happened.

Thanks for your time.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.12
ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CasperVersion: 1.394
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 12 18:12:31 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.