So yesterday I had a problem where I couldn't delete an old windows installation from my second drive. I tried changing permisions, I tried changing ownership etc, but that only got me so far. I couldn't get rid of the vast majority of the data.
So what worked?
Create a folder on that drive called 'Windows.old'.
Cut and paste all the old folders you want removed. (for me Windows, Programs Files and Program Files (x86))
Run Disk Cleanup on that drive and cleanup system files.
Bingo.. you just cleared up a lot of free space your drive.
(on a side note, I was thinking about getting a new hard drive as I was runing out of space. I went on a small cleanup exercise and free'd up about 300GB, from duplicate or unnecessary files), and that was just the quick cleanup)
So what worked?
Create a folder on that drive called 'Windows.old'.
Cut and paste all the old folders you want removed. (for me Windows, Programs Files and Program Files (x86))
Run Disk Cleanup on that drive and cleanup system files.
Bingo.. you just cleared up a lot of free space your drive.
(on a side note, I was thinking about getting a new hard drive as I was runing out of space. I went on a small cleanup exercise and free'd up about 300GB, from duplicate or unnecessary files), and that was just the quick cleanup)