Partition Wizard seemed to find enough information to show that (a) it was formatted with EXT4, and (b) it had about 15GB of usage inside of it.Minitool doesn't seem to like it either.
We don't know if that 15GB reflects your old data files, or new Linux OS files, or both, or what? But it would be helpful if there was a displayable file system table-of-contents in it, and your screenshot from PW suggests that there is.
If you select the large EXT4 partition in PW, on the left side of the window will be a list of operations you can select. One of those is "Explore partition". Can you please click on that operation, which will produce a new "Partition Explorer" window... hopefully.
Can you please post a screenshot of the contents of that "Partition Explorer" window. Do you see your folder/files in it? PW doesn't browse the files, it just explores the file system table-of-contents, which is really all we're trying to find out at this moment, i.e. exactly what is inside that EXT4 partition at the moment. If your data files are still there and their folder/file names can be seen, well that's at least somewhat encouraging as it speaks well for the integrity of the file system. Decent chance I would think of salvaging the data eventually.
My Computer
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- Home-built, two systems (1) and (2)
- OS
- Windows 7 Pro x64 (1), Win7 Pro X64 (2)
- CPU
- i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6MB-cache (2)
- Motherboard
- ASUS P8Z77-V Pro (1); ASUS P5Q3 (2)
- Memory
- 8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)
- Graphics Card(s)
- ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
- Sound Card
- Realtek ALC892 HD Audio (1); Realtek ALC1200 HD Audio (2)
- Monitor(s) Displays
- Eizo HD2441W LCD, Eizo S2433W (1); Eizo 24" S2433W (2)
- Screen Resolution
- 1920x1200, 1920x1200 (1); 1920x1200 (2)
- Hard Drives
- (1) 1TB SATA-II (7200RPM), 2x2TB SATA-III (7200RPM), 250GB SATA-III (10000RPM) for OS; 2x2TB external USB 3.0
(2) 320GB SATA-II (7200RPM), 750GB SATA-II (7200RPM), 150GB SATA-II (10000RPM) for OS; 2TB external USB 3.0
- PSU
- Nesteq ECS-6001 600W (1); Nesteq ECS-5001 500W (2)
- Case
- Acousti-Case 360 (1) and (2)
- Cooling
- Noctua NH-U12P SE2 for CPU, 2x120mm case fans (1) and (2)
- Keyboard
- IBM PS/2 (1) and (2)
- Mouse
- Logitech MX Revolution wireless (1); Microsoft wired (2)
- Internet Speed
- 100mbps down / 10mbps up
- Antivirus
- Microsoft Security Essentials; Malwarebyte Anti-Malware Pro
- Browser
- Firefox
- Other Info
- Ceton InfiniTV 4-tuner cablecard-enabled TV card as well as Hauppauge HVR-2250 OTA/ATSC 2-tuner TV card in (1), running under Win7 WMC