Go Figure Posted October 19, 2015 Author Share #21 Posted October 19, 2015 Advertisement (gone after registration) thank you @pop ! Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/251427-m8-not-writing-dng-files-error-persits/?do=findComment&comment=2907520'>More sharing options...
Advertisement Posted October 19, 2015 Posted October 19, 2015 Hi Go Figure, Take a look here M8 not writing DNG files error persits. I'm sure you'll find what you were looking for!
fiftyonepointsix Posted October 21, 2015 Share #22 Posted October 21, 2015 What is the file size and other properties of the corrupt dng file? If it is more than zero-bytes it would be helpful to see what is in the image header within the file. If there is an error in a value of the header, that would be a clue. Link to post Share on other sites More sharing options...
Go Figure Posted October 21, 2015 Author Share #23 Posted October 21, 2015 What is the file size and other properties of the corrupt dng file? If it is more than zero-bytes it would be helpful to see what is in the image header within the file. If there is an error in a value of the header, that would be a clue. Thank you Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/251427-m8-not-writing-dng-files-error-persits/?do=findComment&comment=2909661'>More sharing options...
fiftyonepointsix Posted October 21, 2015 Share #24 Posted October 21, 2015 Try reloading the firmware for the camera, in case something is corrupt. I would also try DNG only to see if the DNG files still come in as 0-bytes. You might also want to try "RAW+JPEG" using M8RAW2DNG and the button dance. It sounds like a file-write error is occurring, perhaps a file directory entry error. You might want to run a scan on the SD card to see if there are lost sectors. I've found Windows 7 can have problems formatting SD cards and USB memory sticks. Even the SD Format utility can have issues. But this sounds like something the camera is doing incorrectly. Link to post Share on other sites More sharing options...
Go Figure Posted October 22, 2015 Author Share #25 Posted October 22, 2015 Thank you 50/1.6 you are very helpful! I talked to Arvid back in 12/2014 - I am on Mac - Funny that you mention the SDformat utility issues ( I could tell you a few things about that ) - I am using again Lexar image rescue to check for defects and blocks. Question: Do you really perform the initial format in Windows 7 OR in camera ? This is a brand new card with 2 in camera format cycles only. I will reload the firmware. Jaap gave me all the rules on SD card etiquette - so no more hot swapping - although the original 2GB SD Lexar card I hot swapped for about 9 years - and never had a problem ... hmmm Link to post Share on other sites More sharing options...
fiftyonepointsix Posted October 22, 2015 Share #26 Posted October 22, 2015 With all of my cards- I perform the initial format in the camera. I have had many problems formatting cards under Win7. I actually have an 8GByte Sandisk Thumb Drive that Win7 Format corrupted to the point that it was no longer recognized. I formatted it using... DOS 7.0 in an embedded system that boots off a USB card. Only after that could Win7 use it again. Link to post Share on other sites More sharing options...
Go Figure Posted October 24, 2015 Author Share #27 Posted October 24, 2015 Advertisement (gone after registration) reinstalled 2.024 and ... instead of a class 10 ... decided to install the same class 6 16GB Samsung card that works perfectly fine in the other M8 ... we will see if that solves anything . P.S. could not replicate Class 10 error in 8+year old 2GB Lexar card so far. Link to post Share on other sites More sharing options...
fiftyonepointsix Posted October 25, 2015 Share #28 Posted October 25, 2015 I tend to stick with Class 4 cards in my M8 and M9. In the camera. After my experience with Sandisk UHS-1 cards failing after being formatted with the utility from the SD Organization, I believe they do not adhere to the standards. Link to post Share on other sites More sharing options...
Go Figure Posted October 26, 2015 Author Share #29 Posted October 26, 2015 what make/brand are you using ? Link to post Share on other sites More sharing options...
fiftyonepointsix Posted October 26, 2015 Share #30 Posted October 26, 2015 I've been using Sandisk and PNY 4x, 8GByte cards. I had one Transcend 10x card Fail, and two Sandisk "Extreme" UHS-1 cards fail. Never had a problem with the 4x cards. Link to post Share on other sites More sharing options...
Go Figure Posted October 28, 2015 Author Share #31 Posted October 28, 2015 Very nice talking to you indeed , fiftyonepointsix ! Link to post Share on other sites More sharing options...
Go Figure Posted December 3, 2015 Author Share #32 Posted December 3, 2015 So far so good ... both cameras work as intended with Samsung 16 GB SDHC Flash Memory Card, Brushed Metal - MB-SSAGA/UShttp://www.amazon.com/gp/product/B005TUQVQS?psc=1&redirect=true&ref_=od_aui_detailpages00 Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/251427-m8-not-writing-dng-files-error-persits/?do=findComment&comment=2941830'>More sharing options...
Go Figure Posted December 3, 2015 Author Share #33 Posted December 3, 2015 P.S. the cameras display shows 999 as the cards maximum capacity, the actual capacity though is as stated. Link to post Share on other sites More sharing options...
lct Posted December 3, 2015 Share #34 Posted December 3, 2015 It's normal. Better use 8GB cards if you need the camera display. All my 8GB cards work perfectly but i understand that your cameras and/or climate are challenging. Link to post Share on other sites More sharing options...
pico Posted December 3, 2015 Share #35 Posted December 3, 2015 This is not normal at all. The most likely cause is your copy of the SD card. I suggest formatting the card with the SDFormatter app, doing an overwrite of the card, i.e. the slower option. That assertion is worth a gentleman's bar bet. My bet is that the slow 'erase' option does nothing to cure errors because the allocation tables, bad block/sector, pointers, etc are not available to formatting. Link to post Share on other sites More sharing options...
pop Posted December 3, 2015 Share #36 Posted December 3, 2015 That assertion is worth a gentleman's bar bet. My bet is that the slow 'erase' option does nothing to cure errors because the allocation tables, bad block/sector, pointers, etc are not available to formatting. It appears that the "fast" option merely writes the FAT (or its more recent equivalent) and the root directory to the device. The "slow" option reads each block; I'm not sure whether it writes them, too. There seems to be room for hope that the SD formatter performs at least some token error recovery for unreadable blocks. After all, it's published by the SD card associations. Have you got any suggestions on how to proceed to find that out? Link to post Share on other sites More sharing options...
pico Posted December 3, 2015 Share #37 Posted December 3, 2015 It appears that the "fast" option merely writes the FAT (or its more recent equivalent) and the root directory to the device. The "slow" option reads each block; I'm not sure whether it writes them, too. There seems to be room for hope that the SD formatter performs at least some token error recovery for unreadable blocks. After all, it's published by the SD card associations. Have you got any suggestions on how to proceed to find that out? To answer your question: if someone wants to get deeper into some cards he needs a special and rather expensive reader that cooperates with the vendor's diagnostic software and pokes and peeks at a protected area. About SD cards The fast format option merely tells the card to reset. It is a very simple operation that does not require sequential writes to the card. The full over-write (erase, FAPP), tells it to do the same, plus write nulls over all the available card. 'Available' is the keyword here. There is a section of SD cards which is not available to formatting. Most of an SD card is susceptible to bad media and bad blocks in order to make mass production feasible, however there is a part of the SD card that is warranted to be free of defects and is much smaller than the storage section so it is feasible to manufacture at a reasonable cost (and warranted risk.) The unavailable section holds the critical information regarding bad blocks/sectors to avoid in writing. Other stuff is there but not important here. One impression a user might not appreciate is that each card has, in effect, its own computer/controller that talks to the host (camera) so it is not up to the camera to muck with such details and therefore obviates opportunities to err in the cameras firmware and hardware. Link to post Share on other sites More sharing options...
Go Figure Posted December 4, 2015 Author Share #38 Posted December 4, 2015 Thank you for all the support in this matter ! it was my finding that the sd formatter's slow option did not restore any of the three corrupted 8GB Panasonic Gold or Sandisk cards to working condition; nor did Panasonic's own or any other recovery software recover the missing images. So although images were visible on the camera LCD's at the time of shooting - my speculation is that they never cleared the cameras buffer and so were never written onto card itself. It seemed that data recovery by softote and Lexar's image rescue 5 still did the best job finding corrupted, long forgotten images and blocks on the card . IR5 still found images and image previews after treating the cards with SD formatter's slow option. Link to post Share on other sites More sharing options...
Go Figure Posted March 15, 2016 Author Share #39 Posted March 15, 2016 the old acquaintance is showing his ugly face again ... hmm Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/251427-m8-not-writing-dng-files-error-persits/?do=findComment&comment=3008122'>More sharing options...
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