Reddit mentions of WD 3TB My Book Desktop External Hard Drive, USB 3.0 - WDBBGB0030HBK-NESN,Black

Option 1: Test your HDD first with any of these free tools. You may need to replace the HDD. It's very easy to replace the hard drive and RAM in a laptop. It takes only a few minutes in most cases. Google your laptop model + "replace HDD" or "swap HDD" to find the instructions. If you don't know your model number, there should be a sticker on the bottom of the laptop or near the battery that lists the model number and serial number. If the sticker is gone, you can use Speccy to find all the information about your computer and hardware. I don't know why you would think it would be difficult to swap the HDD. Get the WD Black 1 TB currently on sale until midnight tonight and swap the drives. You can also check out these laptop HDDs from Newegg and these laptop HDDs from PC Part Picker. If you want to try to save anything from the old drive, get a dual docking station like this Thermaltake BlacX Duet Hard Drive Enclosure Docking Station so you can clone the HDD or just copy the data.

Option 2: Since you said the data is porn, I'm leaning towards the fact that you may have a virus/malware infection. I would try these steps and see if they help at all.

1. Download ComboFix, HitmanPro, Malwarebytes, Bitdefender Rescue CD, and the Bitdefender free 30-day trial of Bitdefender Internet Security or Bitdefender Total Security. If you want to know the difference between the versions of Bitdefender, check the comparison chart.
   
   
2. Install ComboFix, let it run the scans, remove anything bad it finds, and restart the PC.
   
   
3. Install HitmanPro, let it run the scans, remove anything bad it finds, and restart the PC.
   
   
4. Install Malwarebytes, let it run the scans, remove anything bad it finds, and restart the PC.
   
   
5. If there was anything that couldn't be removed in regular Windows, restart the PC in safe mode and run the scans again.
   
   
6. Boot the PC from the Bitdefender Rescue CD before Windows starts and let it run the scans and then restart the PC. Here are instructions on how to make the Bitdefender Rescue CD. If you need more directions on how to use the Bitdefender Rescue Disk, check these instructions from Bitdefender or these instructions from How To Geek.
   
   
7. Install the 30-day free trial of Bitdefender Internet Security or Total Security and let it run a full scan just to make sure everything is clean.
   
   
8. Purchase Bitdefender Internet Security, Bitdefender Total Security, or another good, paid anti-virus program. According to tests, research, and my personal experience, Bitdefender is the best antivirus for home Windows users. (No, I do not work for Bitdefender or any antivirus or software company, nor do I get any kickbacks for promoting them and never have. I just recommend what I've found is the best option.) I use Bitdefender Internet Security or Total Security on all my computers and recommend it to all my clients. There's no reason to pay $50+ for a paid antivirus. I always buy mine on sale and have never paid more than $20 for a 2 year/3 PC subscription. Sometimes I even get paid antivirus programs for free after the rebate. Watch the sales from different retailers like Newegg: Antivirus & Internet Security, Amazon: Antivirus & Security, Best Buy: Antivirus, Security & Utilities, Staples: Antivirus Software, and eBay: Antivirus & Security Software. There are always sales or rebates so there's no reason to pay full retail price for any antivirus. (If you would like to see the links and research proving the Bitdefender is the best antivirus, feel free to PM me or comment on here and I will be happy to share them with you.)
   
   
9. Backup your PC or at least your important files. If you don't have an external hard drive, use a free cloud service like Dropbox, Google Drive, or OneDrive to back up your most important data. Every computer owner should have an external hard drive and perform weekly backups. If you have a laptop or prefer portable storage, a Western Digital My Passport (Amazon link for My Passport) or Western Digital My Passport Ultra (Amazon link for My Passport Ultra)are great choices. If you have a desktop computer or need more storage space, check out the Western Digital My Book (Amazon link for My Book).

I've had the 4tb version of this for over a year and it's serving me well. Plan on upgrading to 8tb

Yeah an external hard drive is the way to go, you can expand 4Tb for cheap
https://www.amazon.com/Book-Desktop-External-Drive-WDBBGB0030HBK-NESN/dp/B01LQQHL2G/ref=pd_aw_lpo_147_lp_img_3?_encoding=UTF8&psc=1&refRID=8JXSC244CYYKQT19NECK&th=1

WD MyBook from Amazon.

3TB for $99
https://www.amazon.com/Book-Desktop-External-Drive-WDBBGB0030HBK-NESN/dp/B01LQQHL2G/ref=sr_1_sc_3?ie=UTF8&qid=1486312565&sr=8-3-spell&keywords=Wd+myook

People have done tests and the price to speed increase on SSDs is probably not worth it for many. If you don't need a ton of space I use this external drive and it's absolutely perfect. If you need more space I recommend something like this.

https://www.amazon.com/Book-Desktop-External-Drive-WDBBGB0030HBK-NESN/dp/B01LQQHL2G/

Is anyone using the latest version of the WD My Book (this one) with their Wii U? I know the older version is one of the recommended drives. I was so close to making it to the end of the gen without needing to buy an external HDD, but Xenoblade X's DLCs filled my Wii U up, and now Zelda has a mandatory install. Most of the recommended drives are discontinued, or worse, made by Seagate. Trying to avoid y-cables since I've read about problems with them.

Ideally you'd want an external with an external power supply for best performance. There really isn't a huge benefit to getting an SSD external, I wouldn't recommend that based on the price to performance ratio compared to a mechanical drive.

1. 3TB
   
2. Western Digital
   
3. This one