I am a ubuntu newbie trying to install 17.10 desktop on a 500 gb SSD that already has Win7pro installed. Machine is AMD64 with classic MBR Bios. I tried to install from live boot off burned DVD (verified). The disk had been created with an Acronis restore, to have 200 MB of unallocated space after Windows, which runs well. I chose the default "install alongside windows". The install proceeded without asking about partition placement, which I thought meant it had found the obvious unallocated space. However, it stalled at "creating ext filesystem for / in partition 5" (disk had only 2 visible windows partitions to start with). Live ubuntu was still running with cursor spinning, but no progress and no disk activity. After an hour I bailed out. The machine tried to boot Windows but stalled at the "glowing window" stage, indicating that the Windows partition had been damaged. I restored from Acronis image and now Windows runs fine. I was planning to try again with manual partitioning ("something else") but thought I could use some advice first. Thanks!
As requested I am adding screen shots which may explain what happened.
The system SSD as seen in gparted. The unallocated space after Windows is where I want to install Ubuntu
Below is the view of Windows backupu disk in gparted. This disk contains a Windows backup NTFS partition. It originally also contained an antique installation of Ubuntu. I previously deleted the old Ubuntu partitions using the Windows partition tool in case they might interfere with the new installation. However, it appears that when I chose "Install Ubuntu alongside Windows" the installer re-created an ext4 partition on the backup disk instead of in the unallocated space at the end of the system SSD as intended.
How do I install Ubuntu with Windows in the intended location at the end of the SSD? Should I try to delete the non-ntfs partitions on the backup disk again with gparted before installing?