There Is A Big Discussion On The Pros And Cons Of Partitioning Solid State Drives. This Is The Right Thing To Do If The Capacity Is Small.

Should solid state drives be partitioned? The ultimate guide for performance enthusiasts

Recently, in the IT House circle, discussions about solid-state drive partitioning have become lively again. Thanks to IT House netizen Soft Media User 1123274 and Wanwuai for the clue delivery based on Miyouai. This problem is indeed a confusion shared by many DIY players and ordinary users. Today, we will talk about it thoroughly.

Many friends have just installed a computer and taken a look at a brand new solid-state drive. The first reaction is: "The C drive is divided into 100G, the D drive is for games, and the E drive is for storing data." This habit originated from the era of mechanical hard drives, and the logic is clear and clear. However, at the stage of solid-state drives, this "old tradition" may really need to be changed.

The underlying logic behind partitioning: from FTL to 4K alignment

The working principles of solid-state drives and mechanical hard drives are completely different. Mechanical hard drives rely on physical disk rotation, and partitions are divided into different areas on the disk. SSDs rely on flash memory chips and main control chips. There is a complex mapping table inside it, which is FTL (Flash Translation Layer, Flash Translation Layer).

When you perform a partition operation on a solid-state drive, the operating system will indeed divide different logical address ranges into drive C and drive D. However, inside the solid-state drive, the master uses FTL to map these logical addresses to physical flash memory particles. Observed from the hardware level, data is written to different flash memory particles in a scattered manner, which itself is a "load balancing" mechanism.

But why do we say that increasing the number of partitions will affect performance? This situation links to another key point: 4K alignment. If you do not use accurate tools (such as the original Windows installer or DiskGenius) during partitioning, causing the partitions to be misaligned, a physical sector will span two logical partitions. Such a "partition misalignment" will cause the SSD to perform two operations when reading and writing a file. The read and write delays will significantly increase, and its lifespan will also suffer hidden losses.

The current mainstream operating systems and partitioning tools can achieve 4K alignment with default settings during operation. However, if you are still using the older Ghost installation system, it is very likely that the 4K alignment will be damaged, which will bring unnecessary additional pressure to the solid-state hard drive.

The art of capacity planning: No partitioning for small disks, clever use of large disks

As mentioned above, flash memory manufacturers such as Micron have clearly recommended that small-capacity solid-state drives should reduce partitions as much as possible.

120GB-128GB level: To be honest, this capacity is really only enough to install one system today. The Windows 10/11 system itself takes up 40-60GB, plus daily software, virtual memory and hibernation files, there is not much space left. If you forcibly separate drive D, drive C will soon become red. Long-term insufficient space on the C drive will seriously affect the efficiency of the garbage collection (TRIM) mechanism of the solid-state drive, resulting in write amplification and performance degradation. Therefore, for a solid state with this capacity, it is recommended to divide it into only one area and focus on the system disk.

**256GB to 512GB level**: This is the current mainstream situation. You can choose to split into two areas, just pay attention to the distribution strategy. It is recommended to leave 150GB to 200GB of space on the C drive to ensure sufficient space for the system and commonly used software. The rest is used as the D drive to store games or temporary files. There is a hidden trick here: no matter how many areas are divided, a portion of "free space" must be reserved for the solid-state drive, which is **OP (Over-provisioning, reserved space)**. Under normal circumstances, when performing partition operations, do not use the entire hard disk capacity to the extreme, but reserve 10% to 20% of unallocated space. This part of space can allow the main controller to better carry out wear balancing and bad block management, thereby effectively slowing down the slowdown problem that occurs after long-term use.

1TB and more than 1TB: Within the scope of your own space, you can decide according to your own ideas. However, even if the capacity is relatively sufficient, it is still recommended that the number of partitions should not exceed 3. If there are too many partitions, the costs incurred by the master in maintaining the mapping table will increase, which will lead to excessive fragmentation in file management. Although the impact of this fragmentation is not easily noticeable, it will still have a slight impact on extreme performance.

Troubleshooting and efficiency improvement: What to do when speed drops occur

If you have already partitioned and notice that the computer is running slowly, or even has a "disk drop" situation (that is, the system cannot recognize the solid-state drive), don't panic. This is usually caused by a disorder in the main control logic or too many flash memory errors. We can use the "optimization method" at two levels to implement rescue.

Software optimization method (restoring performance):

Updating the firmware is the simplest. Just like mobile phone manufacturers use OTA (Over-The-Air, over-the-air upgrade) to optimize system scheduling, solid-state drive manufacturers will also release firmware regularly to fix bugs in the main control algorithm, thereby improving reading and writing efficiency. Go to the official website to download the firmware update tool for the corresponding model, which can generally increase the reading and writing performance by about 5%-10%.

You might as well try to perform a secure erase. If your data has been backed up, you can use official tools such as Intel SSD Toolbox or Samsung Magician to perform Secure Erase on the hard drive. This operation will put all flash memory units in a reset state, causing the solid-state drive to return to the factory state, completely solving the logic errors and performance degradation problems caused by long-term use.

Hardware optimization method (ultimate fix):

If the above method does not work, for example, the master control information is no longer recognized, then you need to use the "open card" tool to deal with it. The "card opening" mentioned here refers to using specific equipment or software to perform low-level initialization operations on the solid-state drive master, rewrite the firmware and rebuild the FTL. This is a "hard repair" often mentioned in the circle of digital gamers. It is similar to a brain surgery on a solid-state drive. It can effectively deal with suspended animation and slowdown problems caused by abnormal power outages and excessive bad blocks.

File management and daily maintenance:

Developing good usage habits is more important than anything else to prevent the SSD from always being more than 95% full. This situation may have a serious adverse impact on the garbage collection performance of the main control. At the same time, although Win10/11 will automatically execute the TRIM command, you can also occasionally check it yourself. Type fsutil behavior query disabledeletenotify in the command prompt (administrator). If the return value is 0, it means TRIM is operating normally, and your SSD is quietly performing space deflation in the background to prepare for the next fast read and write.

There is no absolute right or wrong about whether to partition a solid-state drive, but there must be scientific principles based on the capacity. For small-capacity solid-state drives, it is wise to divide a partition into a large-capacity solid-state drive. Proper planning and reserved space is the key. A thorough understanding of the main control logic and wear-leveling mechanism behind it will allow the solid-state drive in your hand to continue to maintain the excellent state of "starting the computer in 6 seconds, and loading games instantly".