4 ms·
AFAIK no disk hardware (or filesystem) supports _actual_ byte writes, and never has. They all work by reading in a block (say 512 bytes minimum), changing the b
by kayamon 8y ago
AFAIK no disk hardware (or filesystem) supports _actual_ byte writes, and never has. They all work by reading in a block (say 512 bytes minimum), changing the bits you asked it to and writing the new block out. So it's no extra effort to simply write the new block to a different location.