System freezes during Windows installation on Ubuntu.
System freezes during Windows installation on Ubuntu.
I configured my laptop for dual-boot by making two partitions on one drive and installing each OS separately. Windows appears to treat the drive differently than Disk Management suggests, possibly attempting to mount it constantly. You might consider removing the drive in Disk Management or turning it off via Device Manager. It seems you likely don’t need Windows to attempt access—especially if you used ext4, as it wouldn’t even try. In theory, this should let Windows ignore it, but it shouldn’t impact booting when you restart properly.
In disk management it's handled this way: click the disk with the right-click button → Offline No, it confirms you've disabled it. Just because I haven't tested it doesn't mean it works, so please verify before assuming.
You likely kept the installation on a mounted location like D:\ or E:\ during the reboot. After the Ubuntu setup, Windows would recognize it and ask about partitions such as EXT4. You might need to inform the user while you troubleshoot the issue. Use Disk Management to see if any letters are attached—this could help unmount the drive. Don't forget to back up your data before proceeding.