One of the hard disks on my Desktop PC failed (probably due to heat), the one with all my data which was the Linux /home partition. To make matters worse, after buying a new HDD and installing Fedora Linux, by mistake during the installation process I deleted the main backup of that data which was on the second hard disk!! I could only do a partial retrieval of files from the failed hard disk. The file transfer would begin well but would stop though only 10% finished. I noticed the HDD got very hot in the process.
Because my most important files are also backed up on a laptop PC, I transferred them to my Desktop PC and had enough data to be able to continue my work. I lost about 150 gigabytes of non-essential files, 15 years of photos, hundreds of music MP3 files which totaled 3 gigabytes, my entire Documents folder of 17 years of documents, and other folders and files. None of the data was vitally important for me, but nevertheless I felt bad to suffer such a loss.
The next day just after waking up in the morning, I realized a way to keep the failed hard disk cool by putting it on a plastic bottle of cold water with a wet towel between the bottle and the hard disk to help transfer heat. Glory to God, it worked! I retrieved 100% of my photos and music!!
I bought a 120 gigabyte SDD to use as the root partition for my Linux OS, and used the healthy second HDD for my new /home partition. The boot time of my PC now is less than half what it was before. :-)