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Why reformat SD card?
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Oct 5, 2022 10:43:47   #
Hereford Loc: Palm Coast, FL
 
I'm with "burkphoto's" last comments as best practice for photographers.

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Oct 5, 2022 10:47:08   #
wdross Loc: Castle Rock, Colorado
 
Dragonophile wrote:
On another post several people indicate that they reformat their SD card after transferring files from camera to computer. Why? I just cut files from card and paste to computer folder using a USB card reader. I have never experienced any file corruption on my SD card. I don't reformat a hard disk after deleting and moving files so why do so after using a SD card?

I am wondering if these people are being extra cautious or if there is a valid reason this is beneficial?


Personal, I find the SD cards another source of storage. Even big SD cards are rather cheap. And big cards do not fill fast. This gives you a RAW and JPEG for usage and a separate storage area of all your acceptable shots for transfer. I also backup on an external removable solid state drive what I complete on the computer. I need to get better processing software, but that is a different issue. But when I do, my images will be in three different areas to be pulled from.

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Oct 5, 2022 10:54:43   #
Longshadow Loc: Audubon, PA, United States
 
wdross wrote:
Personal, I find the SD cards another source of storage. Even big SD cards are rather cheap. And big cards do not fill fast. This gives you a RAW and JPEG for usage and a separate storage area of all your acceptable shots for transfer. I also backup on an external removable solid state drive what I complete on the computer. I need to get better processing software, but that is a different issue. But when I do, my images will be in three different areas to be pulled from.

I can't store the same images in more than one location. (Other than backups, which are never used a working files.)
All my images for a given shot are in ONE place, RAW, JPEG, edited, cropped, aspect ratios (8x10; 5x7; etc.), tweaked, experimented, acceptable, not acceptable, ...
No way I'm spreading those things over multiple locations. Any variation of the same image is in the same place.

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Oct 5, 2022 11:12:45   #
pecohen Loc: Central Maine
 
Longshadow wrote:


I can't imagine that any memory company would explicitly "write over" deleted files with ones or zeros to "delete" the file.
So much wasted overhead, time, and "writes". Simpler, quicker, and more efficient just to alter the FAT table and leave the actual file data alone.



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Oct 5, 2022 11:15:04   #
smf85 Loc: Freeport, IL
 
bw79st wrote:
So what's the bottom line? My Olympus cameras offer me a choice when I wipe a card: "All Erase" or "Format." Which is the option that offers less wear on the SD card?


Use “All Erase”.

Probably the difference is negligible if the cards are only used on that camera. It could be significant if the cards are used on multiple camera’s. Particularly if they are of multiple brands.

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Oct 5, 2022 11:19:14   #
burkphoto Loc: High Point, NC
 
Longshadow wrote:
Like I said, I can't imagine any company explicitly wiping the actual file data.....


I was glomming onto that... You are correct. It's a waste of time, unless there is a legitimate security concern (in which case, a low-level complete wipe is necessary to erase all vestiges of image files).

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Oct 5, 2022 11:25:04   #
Longshadow Loc: Audubon, PA, United States
 
burkphoto wrote:
I was glomming onto that... You are correct. It's a waste of time, unless there is a legitimate security concern (in which case, a low-level complete wipe is necessary to erase all vestiges of image files).

If I had a security concern, like a retired hard drive, I would delete the appropriate files and run Windows Cipher on the device. My camera cards pose no security risk.

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Oct 5, 2022 11:36:37   #
smf85 Loc: Freeport, IL
 
SuperflyTNT wrote:
That link has nothing to do with the subject. It’s just describing a certain type of SD card that does wear leveling. It’s mostly for cards used in industrial applications that get a lot more writes and reads than those in cameras.
Whether you delete or format the only thing that’s affected is the FAT. It’s just the index. It tells you what’s on the card and the memory location. The data remains where it is until it’s overwritten with new data. Essentially the difference between deleting files and formatting is that deleting removes each entry from the FAT while formatting wipes it clean. Formatting in camera also makes sure the directory structure is set up correctly for that camera.
Since I import directly into Lightroom it ejects the card once the download is finished. I’d have to remove and reinsert the card, then go to File Explorer to delete the files. It’s easier to just put it back in the camera and format. Plus, this is from Nikon:

“The reason why a memory card needs to be formatted is simple, the card when formatted performs at it's optimum. Formatting after each download is one way of making sure that you will have less chance of ending up with card corruptions. Also being at it's optimum, the memory card can read and write at it's best for the camera you are using.”
That link has nothing to do with the subject. It’s... (show quote)


All Memory cards do wear leveling. Formatting on a blank card writes a file system to the card and creates a header so files can be written. Camera formatting adds directories. Reformatting a card simply re-writes a blank file table and directories. Deleting files makes many writes to the file table cells as the files are deleted. More wear on the card.

Camera formatting is preferable unless you fully understand file system structure. While it’s possible to create a highly optimized file system that’s faster than a camera created one - there are penalties for that speed - they might not be acceptable for you.

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Oct 5, 2022 11:45:40   #
SuperflyTNT Loc: Manassas VA
 
smf85 wrote:
All Memory cards do wear leveling. Formatting on a blank card writes a file system to the card and creates a header so files can be written. Camera formatting adds directories. Reformatting a card simply re-writes a blank file table and directories. Deleting files makes many writes to the file table cells as the files are deleted. More wear on the card.

Camera formatting is preferable unless you fully understand file system structure. While it’s possible to create a highly optimized file system that’s faster than a camera created one - there are penalties for that speed - they might not be acceptable for you.
All Memory cards do wear leveling. Formatting on a... (show quote)


Go read your own link. You clearly don’t know what you think you know.

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Oct 5, 2022 12:00:07   #
Soul Dr. Loc: Beautiful Shenandoah Valley
 
I have been into digital photography since the mid 90s. I have been copying my images to my computers and reformatting the cards in camera since then.
I have never had a problem with any cards using this method.

Will

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Oct 5, 2022 12:29:45   #
jack schade Loc: La Pine Oregon
 
I transfer all the files to the computer external hard drive. After that it is just much faster to format the card.

jack

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Oct 5, 2022 12:52:02   #
smf85 Loc: Freeport, IL
 
SuperflyTNT wrote:
Go read your own link. You clearly don’t know what you think you know.


Hardly.

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Oct 5, 2022 12:52:24   #
MJPerini
 
If Cut and paste works for you, and you are happy with it, that's fine.
But once you have 'Cut' those files you have removed your only backup copy until you create another.
You may not have experienced a problem, which is great, but you have left yourself open to losing files unnecessarily.
So it is not a 'best practices' procedure. You may not care, and that is also ok if you don't work for others.
Your potential pain is limited to the value you place on your pictures.

I do work for others and our procedure is that Cards do not get reformatted until they reside in two places locally and one off site. The card goes in a pending box near the workstation until that time. Then it goes in the "OK to reformat box.
Personally I follow the same procedures for personal work. It is easy, painless and secure.
Most camera manufacturers also say Don't erase files from the card in the computer, always reformat the card in the camera in which it will be used, and since that is also easy, I follow that as well.

I'm not one to try to prescribe procedures to other folks, you asked if there was a good reason not to "cut" files from the card and Paste to the computer. It seems to me there is, but they are your pictures and you seem to be ok with the risk. So Good luck and no ill timed power spikes.......

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Oct 5, 2022 12:55:46   #
nathanweddings
 
Kind of like not reusing toilet paper. You can, but better not to. :)

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Oct 5, 2022 13:16:32   #
srg
 
BebuLamar wrote:
It's not easy to get to the first and the last files on the cards if you have several hundreds files and you may have to scroll. I hate scrolling the most.


People who post dozens of pictures of the same dog, or flower, or bird, take note.

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