Assuming you have a W10 system with ReadyCache working and fast boot enabled, there’s a way to further decrease Windows load time if your system is suitable. Windows 10 can compress system files, and should automatically do it if it detects a small SSD as OS drive.
This uses a very light compression algorithm, and can also be used on a HDD, so that it needs to spend less time reading, with also the slight advantage of less cached lbas on the cache drive. The downside is a little extra CPU occupancy when accessing system files, but overall the decompression time of all of those acessed files to RAM can take less time than the slow hdd loading extra KBs.
To verify current state, on admin prompt you do:
To enable OS files compression you do:
To disable OS files compression you do:
Both enabling and disabling takes some time, and probably it’s a very bad ideia to interrupt both processes. End the end, you’ll be notified of the achieved compression ratio (usually close to 1.6:1).
To see results, you must give it time for ReadyCache to cache sensitive boot files again (three restarts after waiting some minutes after each to fill cache should do). After that, when the Windows own fast boot works in conjunction this compression, it can give you even faster boot times.
Not every computer is the same and, in some PC’s where there’s less CPU to spare, it can have a negative effect. But then, it’s easy to revert.