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I bought this 1 TB 860 EVO from Amazon on 12/14/2019 to upgrade a Dell i7 desktop running Windows 8.1. I installed the Samsung Magician software to manage it. I got the blue screen of death a couple of times a day. I put it in the junk box after 2 days. I recently tried to use the 860 EVO as a cache SSD for a large HDD under PrimoCache. At first, the EVO didn't show up under Windows Explorer or DISKMGMT, then it finally showed up. I set it up as L2 cache, then it disappeared after an hour. I tried replacing the SATA cable. No change. I put in a $25.99 Kingston 240 GB SSD and it has been working perfectly. I have purchased 9 SSD's from Amazon in the past 2 years, including an Intel OPTANE 905P, 3 Kingston, 2 Crucial, 1 Sandisk and 1 WD Blue. I use one Crucial for fast backups and used the other to upgrade a laptop. I have used Kingstons and the Sandisk for backups and to upgrade old laptops running Linux Mint. They are all working perfectly except for this EVO. I am happy for all of the happy reviewers. I obviously got a dud. I have had some pricey Samsung thumb drives get really slow or stop working while making daily backups. No more Samsung flash for me. I have had great luck with Kingston flash, both SSD and thumb drives. They are consistently fast, reliable, and economical.
I wish I had returned it before the return window had closed. I installed Ubuntu 20.04 on it and thought everything was fine, but then the freezing of the entire system started occurring (requiring a hard reboot). Since then I've been trying to find a solution, but to no avail. I'm tired of trying to fix it. Oh well. Better luck next time. BTW, I received it January 15th, 2021.
I was going to use this as a storage drive for backup files and important files/pics. Years worth of stuff lost in a split second. Only Samsung product I've ever used that has failed on me. Disappointing.