Good Morning, Peter!
I cannot fully answer your question, as my knowledge of formatting in cameras
What I do know, is that SD cards can eventually become "confused", as cards are
filled and refilled. Cameras usually offer two methods of "resetting" an SD
card for further use.
"Erase All", which does exactly what it says, but will not erase images which
were "protected" by the camera's software.
"Format" is the other option. Re-formatting the card totally erases
everything, including any shots that were "protected" by the camera.
The problem with "Erase All", is that after many, many times, pointers within
the system can get scrambled and the card becomes useless - meaning you lose
the images on the card. Such a card can be re-used after reformatting in the
camera, but any images on it will be permanently gone.
If you use "Format" to clear your old images after copying them to your
computer, you e-set the card to "new" status, and your chances of a failure are
Thus, I never use "erase all", but rather "format" my card after every transfer
of my images to my computer. Since I started this method (2006), I've never
had a card failure. Prior to that, I had two, both on major holidays. It seems
if you consistently use "erase all", it is only a matter of time until you have
No matter what formatting is used (FAT-32, Ex-Fat, etc.), formatting your SD
card in your computer is faster than using the camera to format the SD card,
but it can render your card useless for camera work.
In-camera formatting optimizes the file system for your particular camera and
thus is always the safest option.
My advice? Don't worry about which format is used. Your camera knows what's
best for it!
I hope this helps.
Good morning to you all. Hey, I have another couple "rookie" questions------
for anyone to help me out with, please. SD cards.
Before I go and potentially destroy a few small older cards I thought
that I'd ask. I use Apple/Mac hardware and last night while I was
running the Disk Utility program it occured to me that I had never put
an SD card into the Reader while I had this particular program running.
So I plugged one in that I had used in an Oly EM1 and the format that
was on the card was identified as being MS-DOS (FAT 32). I pulled one
out of a Leica M9 and it was identified as being the same, MS-DOS (FAT
32). My questions are:
1) Do all digital cameras now work exclusively with the MS-DOS (FAT 32)
format, or would re-formating into another protocol such as Ex-FAT or
one of the Mac's (Mac OS Extended, Journaled or Mac OS Extended, Case-
Sensitive, Journaled) work or render the card useless at least for
2) If another format would work, what would be the advantage(s), if any?
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