On Wed, Apr 29, 2015 at 10:46:38PM -0400, Robert Moskowitz wrote: > I have a Microcomputer center a couple miles away, and they have mSD > cards by the dozens at the checkout counters. Each comes with the > SD adapter. I think I just spent $9 each for a few more 16Gb cards > for my testing. I've been using the EMTec cards carried by MicroCenter. I don't trust no-name or store-branded cards. There are just too many fraudulent cards out there. I've considered using MicroCenter's, just because I can go back to the store if there are problems, but the difference in price hasn't been worth it. Also, another thing you should consider is that there are speed classes of SD cards from 3-10. You want Class 10--10MB/s. You'll often see Class 2,4, and 6 cards at great prices--there's a reason. I hate to recommend a Microsoft-based solution--try running it under wine or something, if it offends the sensibilities--but look for, get and run a little ditty called h2testw.exe (best site would be the source, http://www.heise.de/download/h2testw.html--it's a German author and site, but you can figure it out.) There are Linux alternatives--the one that comes to mind is F3: http://oss.digirati.com.br/f3/ Others, and some discussion of the problem: https://www.raymond.cc/blog/test-and-detect-fake-or-counterfeit-usb-flash-drives-bought-from-ebay-with-h2testw/ Some think that a RPi OS running off a SD card should be "tuned"; others dismiss this, as the card specs give a large number of R/W ops before MTBF. Nevertheless, especially if you're going to run 24x7, some things just make sense: o Turn on noatime in fstab o Use tmpfs in fstab o Use a bigger card--not for storage space, but wear leveling. As far as size--Raspbian comes as a 2GB image, which you expand to use the capacity of the card. If you'r not going to do a lot of local data storage, 8GB will work well (and be a lot cheaper). 16GB is a nice compromise on cost/capacity (and wear leveling, if you believe in that as an issue). 32GB is pricy, and if you're thinking about that much storage maybe you want to hang a USB HDD or even SDD off the box; after all, we now have four USB ports with the Pi 2. Cheers, -- Dave Ihnat dihnat@xxxxxxxxxx -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
