12/10/2025
HDDs and SSDs and Windows 10/11
"My computer is running slowly!"
If you have an older Windows10 or 11 PC and it's running slowly, there's one upgrade you can make that should make a big difference.
For some time now, it has been obvious that Microsoft no longer considers (or even cares about) users who still have mechanical Hard Disc Drives (HDDs) when they test Windows updates. Recent Win10 and Win11 builds will not run effectively on mechanical HDDs.
As an example, some years ago I bought a brand new Dell laptop that came with Win10 installed. It ran well, but just a couple of months later and after another update it suddenly seemed to slow down massively. At the time, I believed that this was because of a well-publicised problem where a security hole had been found in the look-ahead functions of the latest Intel processors. Microsoft's reaction to this problem was to simply disable those functions in an update, but that of course slowed down any computers that used those chips. . .
Like many users, I found myself turning off some of Windows' pointless features to try to improve the speed, with minimal gain. It was still painfully slow to boot and I could hear the HDD clicking away all the time, even when I wasn't doing anything with it. Then every weekend, when the updates tended to be installed, it would just grind to a halt. The system would spend pretty much a whole day installing updates, during which time it became unresponsive and unusable for most of that day.
I upgraded the RAM in the laptop to the maximum allowed. That improved overall performance (e.g. opening applications), but it was still grinding to a halt frequently.
By contrast, a much older Dell laptop (which originally ran Vista) ran the same build of Win10 like lightning. Why was this much faster? It should have been slower! Then one day I remembered that I'd replaced the HDD in this old laptop with a Solid State Drive (SSD). I'd completely forgotten that I'd done that!
Suddenly it was clear: Windows10 runs slowly now because it is constantly messing with the HDD contents, even when the system is not being used. You can try disabling the Search Indexer and other suspects, but it won't make much difference. I don't think there's a single culprit; Windows now has a huge posse of background tasks (including several components of the Update system) that are constantly reading and writing to the HDD, and most likely reporting their findings to Microsoft. . .
Therefore I bought a new SATA SSD to replace the original HDD. I cloned the partitions from the HDD to the SSD and fitted the SSD. Bingo!
Suddenly it was much faster to boot, much more responsive to use, and I no longer had "lost days" due to updates being installed.
So, if you have an older PC that still has a HDD for its C: drive, I would recommend upgrading to an SSD. It makes a huge difference.
But there's a caveat. . .
The SSD I bought (purchased directly from a well-established, reputable USA hard drive manufacturer whose HDD products I'd used in PCs and servers for years) suddenly failed a month or two after installing. No warning signs, no clues - it just stopped working. It turned out that the failure mode was the drive switching into a "safe" mode because it detected some error in the storage. But that "safe" mode was not really "safe" because it prevented any access to the contents. Apparently the data recovery firms can only extract data by soldering the SSD board to special circuitry that bypasses the built-in controller. Not something you can do at home!
When a mechanical HDD starts to go wrong, the user gets some warning signs: odd errors, strange sounds from the drive. And data can still often be recovered using software tools, even when the partitions become unusable. With SSDs - forget it!
In my case, the SSD was covered by a warranty, but of course the data on it was not. I could have sent the SSD to a data recovery firm, but the cost would have been very high, and then the SSD manufacturer may not have honoured the warranty because the drive had been dismantled. (There was a process by which the recovery firm could liaise with the manufacturer so as to maintain the warranty, but it was all complicated and risky and I didn't have the time to deal with it.)
A replacement drive arrived in the post, but by this time I'd been reading lots of complaints on the manufacturer's user forum about this particular range of SSDs. Apparently they were gaining notoriety as being completely unreliable. The manufacturer had offered me an upgrade to their next level of SSD and I'd accepted the offer, but when it arrived, it was the same type that I'd had before. I could have returned it, but decided not to waste any more time on the matter.
But after reading even more horrific tales of this model of SSD (and also of another range the manufacturer makes under a different brand name) failing, I decided to remove this new SSD and replace it with an SSD bought from another supplier (this time an established manufacturer that is well known for making memory products - which is effectively what an SSD is). The suspect SSD was kept in a drawer and used only for temporary storage as an external drive. I didn't trust it!
My suspicions were correct. A few months later, I took the SSD out to use it - and it had failed, just like the first one.
I reported this to the manufacturer and they organised another replacement. This time I made sure that they sent me the higher-spec model.
But by now I'd lost all confidence in this company's SSDs (although I still rate their HDDs as being some of the best). So that SSD is not being relied on to do anything critical.
Since then, I have been called out a few times to deal with PCs where SSDs have failed. Increasingly, these are the new M.2 format of SSD (just a tiny circuit board that sits on the motherboard) and these seem to be unreliable.
There are also suggestions that SSDs can fail if they are not powered-up frequently enough to refresh their storage. This implies that using an SSD as backup storage is not a good idea, as the contents can even be lost while the drive is sitting safely in a drawer.
So although I recommend upgrading to an SSD to improve (or restore) performance of a PC, I highly recommend making sure that you have your data backed-up somewhere else, but NOT to another SSD or USB stick - because these can fail just as easily.
I recommend seeking out mechanical HDDs to use for backup. You can still get USB-connected mechanical HDDs, and there are also some useful USB adaptors that allow bare HDDs to be inserted in slots.
If you have a desktop or tower PC with enough SATA ports and physical room, I recommend using a mechanical HDD for additional internal drives for data storage, whilst the boot drive is and SSD. Although HDDs are slower, this isn't such a problem when they are only used for backup or data storage. It's their use as the bootable Operating System partition and the Windows folder that slows the system down.
I also recommend using optical media (CD, DVD, Blu-Ray BDR discs) for long-term and archival storage. Optical media are inherently more stable than magnetic HDDs or SSDs and have been proven to last.
Ideally, your data needs to be stored in three separate places, so a third location could be Cloud storage. Windows10 and 11 offer a limited amount of Onedrive storage for free, and there are many competing Cloud storage services out there.
Note: the photo is NOT of the bad model of SSD, but of one of the reliable devices I have since used.