Integrity Pro download the new for apple2/18/2024 ![]() Had I fully written to the SD card immediately after buying it, the bad blocks would probably have been re-assigned. ![]() I read a bit more about SD cards and it seems they can re-assign bad blocks (just like a regular hard drive), but only after you’ve tried to write to them. To my surprise, the software found no errors! I formatted again, reran the verification and again, no errors! Was my camera faulty? Since h2testw will only test empty (free) space on a selected volume, I “quick” formatted the sd card before starting the verification. Next, I inserted the suspicious memory card. In VMWare Fusion, I connected my MacBook Pro’s “Apple Internal Memory Card Reader” to the virtual machine (this will temporarily disconnect the device from Mac OS X, so eject any card you have in the reader before attaching it to the virtual machine). Testing SD card using h2testw on Windows on VMWare Fusion ![]() ![]() It does this byte-by-byte, so not a single bit will go untested (well, actually, the very last Megabyte might go untested, see the Readme). This software will write to all available free blocks on a volume and will then verify (read back) whether the files are still in the right shape. It’s Windows only, but fortunately I have a VMWare Fusion hosted Windows 7 virtual machine. Until I stumbled upon “ h2testw“, written by Harald Bögeholz. Not so much really, in fact, I couldn’t find any fully automated test programs at all! Windows based “h2testw” How could I have detected on beforehand the memory card was corrupt? And how would I be able to determine the corrupt block(s) now? I just started google-ing for “verify integrity sd card”, expecting to find hundreds of results. At this point, I just hope for the best that only those last two photos were corrupted.īack at home a week-and-a-half later, it turns out I’m extremely lucky! Indeed only those last two pictures were corrupted! Preventive detection of bad memory cards I do what I’ve learned from experience with corrupt memory cards: turn off the camera immediately, remove the SD card, and to be sure, “lock” the card (making it read-only) using the physical switch on the SD card. I’m approximately on two-thirds of the card’s capacity and it is corrupting my photos. I take another photo, review it and it’s immediately “broken” again. While I’m reviewing the last five photos, the camera suddenly displays a “broken picture” image on the screen. I’ve happily been taking photos and videos with my new camera. Three days later my holiday would start and I would have a good (enough) camera to capture some fine moments! Corrupted photosįast-forward about two weeks, half-way into my holiday. When I returned home, I formatted the card in-camera, and played around with the photo and video functions. I decided to buy a Samsung 8GB SDHC card, which would be able to hold up to 1500 photos or an hour of HD video. A few meters down the corridor was a huge wall covered in memory cards. I then realised that my existing 512MB and 1GB SD cards would no longer be large enough for the 12Mpixel photos of this new camera. 15 Minutes later I found myself in the Media Markt with the camera in my hand (unfortunately only the silver colour was available, I had hoped to buy the black one). So I quickly checked for the latest and greatest compact camera’s and decided I wanted the Canon PowerShot SX240 HS. The week before going on a holiday, I realised my old Canon Ixus 40 camera would no longer live up to my expectations.
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