October 28, 2016
I was just testing some old hard drives I had laying around and thought I check the warranty on some of them since they are not working. So I thought I get something together to make it easier to find those company pages. Of course you can always do a search for them yourself. These are in no particular order.
I just found out that some of my drives are a bit older so the numbers don't even come up on these checkers.Well, so much for that. Also, keep in mind that some of the links may not even work as I just found out. If you hit the more in the troubleshooting option for hgst you get a 404 error.
HGST (AKA Hitachi)
Samsung - I'm not sure this is a warranty checker but I think it's a good starting page.
This other page for samsung drives actually links back to seagate. So I'm not sure what's going on here. So check the seagate tools since they may also work for samsung.
Diagnostic tools links
Hgst (May not work with some older ide drives) - https://www.hgst.com/support/hard-drive-support/downloads
I have some old IDE fujitsu hard drives that I wanted to test and this is the only tool I found for them. I'll add the other fujitsu link as well, but this is just what shows on their site.
Fujitsu - https://www.lifewire.com/fujitsu-diagnostic-tool-review-2624559
Seagate - http://knowledge.seagate.com/articles/en_US/FAQ/202435en
Western Digital - http://support.wdc.com/downloads.aspx?p=171&lang=en
Toshiba - http://www.mytoshiba.com.au/support/items/faq/596
Toshiba hard disk recovery utility - http://support.toshiba.com/sscontent?docId=98081179
Crystal Disk Mark - http://crystalmark.info/?lang=en
HDD Guardian - https://hddguardian.codeplex.com
PassMark - http://www.passmark.com/products/diskcheckup.htm
Hddscan - http://hddscan.com/
As far as who has the best warranty, you should just check the packaging on retail drives. That is usually marked on them. With bare drives, you will need to check those individually. The more time, the better. I figured I might as well add some of the hard drive utilities under each one to make it easier to find. At least what I can find. I have not used every one of these so check them and use them with caution.