How often do you replace your SD cards?

Started Mar 10, 2018 | Discussions thread
Guy Parsons
Guy Parsons Forum Pro • Posts: 31,234
Slow-level formatting

tcg550 wrote:

That is not a low level format. Sure, that's what Canon is calling it but there is no way the camera is doing an actual low level format in 10 -12 seconds.

Yes, they are telling porkies.

I wonder why they would choose that term to describe something it's not doing.

Just now tried a Class 10 16G SDHC card (which test writes at about 13MB/s) in my notebook with the official SD Association format program.

  • Quick format 4 seconds.
  • Full sector format, I gave up at 10 minutes and it was only up to 44%, so full format of 16G would take near 23 minutes by my calculation.

So full formats, that is real full formats, are only for the terminally paranoid with a lot of time to waste.

Regards..... Guy

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