Unable to use OVA file to restore LinuxLite on VirtualBox.

[Şerban S.]

[...] Sometimes I get "invalid chs sector 0". [...]

Hello!

This is bad news. This message only appears when your hard drive is failing.
What you need to do is perform an integrity check.
You can use a live distribution such as GParted Live and check the drive for bad sectors.
I forgot what are the Apps bundled with Linux Lite, but if you have Gnome Disks, you should use it to test your drive for integrity and see what it says.
The message usually appears when the first sector of the disk is damaged but this means the drive is pretty old and has many thousands hours of service and needs urgent backup and replacement.
I encountered this many times. Last time it happened, was some couple of months or so (February or March, I forgot) and I had to replace three HDDs since there were bad sectors on those and weren't reliable any more. I can still use them, but safety is out of question.
So instead of trying to reinstall, which will further damage the drive, first run diagnostic tools (Smart Monitoring Tools, "gsmartcontrol"). If it finds defective sectors than you need to backup immediately and replace the drive.

Besides, the behaviour of the Windows installation points to the same problem: after a format and reinstall, this kind of random message is unusual, unless there are bad sectors.

Hope this will help you prevent losses.

Best regards!