Originally posted by zidane1980 at 2008-2-5 01:18 PM:
At first glance, the LZ has never experienced the DOS era
Back then, people just powered off directly
They manually saved and exited the program before powering off..
Software-powered off is something that appeared after Win95
ps:
There is a parameter for smartdrv. After execution, it can write the data in the write cache back to the hard disk (if write cache is enabled)
What you said is correct. Back then, people just pressed the power button to power off. And there were no power supplies that supported soft power off at that time, so there was naturally no concept of soft power off. But now the situation has changed. Since the power supplies of new machines generally support soft power off, you can't directly power off by pressing the power button on a new computer now; you have to press it for 6 seconds. This time is better spent just powering off using a program. Anyway, most people who know DOS like to type keyboard commands. Also, clearing the disk cache isn't just as simple as SMARTDRV (SMARTDRV can use /C to clear it). There are others, like LBACACHE, QCACHE, etc. There are various disk caches, but it's easy to forget to manually clear them before powering off. It's better to have a soft power off program automatically clear them. It's definitely faster and more straightforward than first clearing the cache and then pressing the power button for 6 seconds. It's safe and convenient. Therefore, especially for new computers, even soft power off in DOS still has some value; otherwise, there wouldn't be soft power off programs in DOS (and I know there are quite a few).
