That's a deviation of less then 0.5%.. that's not that bad in most industries.. S On Thu, Jan 19, 2012 at 14:48, Robert P. J. Day <rpjday [ at ] crashcourse [ dot ] ca>wrote: > > over the last day on the beagleboard list, there was an animated > discussion that touched on the fact that some "dd" copies to SD cards > was failing since the actual capacity of the SD card was noticeably > less than advertised. as in, trying to write a 4G image to an > allegedly 4G SD card failed, "no space left on device". > > is there a utility in linux that will tell me that *real* capacity > of an SD card if i pop it into the SD slot? if i write an image to an > allegedly 8G micro SD card and pop it into my beagleboard, and stop in > u-boot, what i can do is: > > # mmcinfo > Device: OMAP SD/MMC > Manufacturer ID: 27 > OEM: 5048 > Name: SD08G > Tran Speed: 25000000 > Rd Block Len: 512 > SD version 2.0 > High Capacity: Yes > Capacity: 7969177600 <--- AHA! > Bus Width: 4-bit > # > > that's *clearly* less than a true 8G. is there a way to see that in > linux? thanks. > > rday > > -- > > ======================================================================== > Robert P. J. Day Ottawa, Ontario, CANADA > http://crashcourse.ca > > Twitter: http://twitter.com/rpjday > LinkedIn: http://ca.linkedin.com/in/rpjday > ======================================================================== > _______________________________________________ > Linux mailing list > Linux [ at ] lists [ dot ] oclug [ dot ] on [ dot ] ca > http://oclug.on.ca/mailman/listinfo/linux > -- Pythian proud winner of Oracle North America Titan Award for Exadata Solution...watch the video on pythian.com