Possibly writing directly to the controller and resetting itself that way might work but I can't see the data on the "drive" being an issue.ĭo you know something about the very specific SSD problem of decreasing performance after they had been used for a while or you are just talking about general HDD related problems (like fragmentation and co)? I did a quick google search for this and found nothing that indicated this would help your write cycles could you please link the websites that you've been reading because I don't think it will truly help. Reading and writing inverting patterns will draw the most power during the operations, but having the "drive" filled with 0's will draw the most steady state power. Drawing more power into the chip puts more stress on the junctions and the other units on the die and could bring about premature failure. Thus filling the drive with 1's (inverted to 0's) will draw more power then if it was filled with 0's (inverted to 1's) - I know, sounds backwards but it isn't. BUT the storage of 0's is more power hungry then storing 1's (just the way the technology works).
#Mac hard drive space filling up for no reason system drivers#
If they are using something like this, it may be in another NVRAM location or a reserved section that you can't write to (don't want some file filling that location).Īs to writing 1's or 0's, that's depends on the technology right now most drivers are using NAND and thus writing 1's does effectively write 0's to the RAM. Well, sounds all good, but how does the controller know this? There MIGHT be come blocks of reserved memory used to indicate which blocks have been used and which ones haven't but that doesn't mean that filling the memory with 1's will reset it. What the OP is saying is that by filling the drive with 0xFF bytes (all 1's) it will reset the controller in some way so that it doesn't have to read the block before doing the write because it will know that block is empty. This is normal operation and the controllers have this functionality built into them thus to the end user, and even the OS, they don't see this operation. If you're writing to a block of memory but are not filling the block, the controller has to read the entire block, replace the components that you are writing, and then write the entire, modified, block back to the memory.
This is because the SSD memory operates in blocks, all accesses either read a block, or write a block of memory. This takes time, but has to be performed regardless of the data in the RAM. On a write an SSD device has to do a read modify write operation if the write does not fill the entire block of RAM.
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