USB闪存驱动器的扇区大小可以更改吗？

Question

我知道可以更改USB闪存驱动器的群集大小，我们也可以更改扇区大小吗？

Answer 1

Sector size isn't a configurable parameter in ATA/SATA/SCSI/etc devices and, from my experience, USB flash drives implement one of these protocols. The sector size is reported by the device itself but, even if you could set it to something other than 512, you would likely run into a latent bug somewhere in a driver or file system package that assumed a sector size of 512.

There are real reasons for using a sector size like 512, for example, addressing of larger sectors can be done more quickly and efficiently (not just in time but in size/space as well). Throughput to these devices is also better with something like 512. Consider that, if you could set sector size to something like 16-bytes, you might have less wasted space with 16-byte sectors compared to having a number of half-full 512-byte sectors, but your throughput to the device would probably be worse. In fact, writing a single 16-byte sector would only be slightly faster than writing a single 512-byte sector. On the other hand, writing 32 16-byte sectors (to write a total of 512 bytes) would likely take longer than writing a single 512 byte sector simply due to the overhead associated with transferring multiple sectors.

I would suggest you buy a larger USB flash drive if you are worried about wasting space with 512-byte sectors.