Hello Bruce, On an Odroid C2 I have had one of the cards to be corrupt. I ended up finding the corrupt file and renaming it, then created a new one. That apparently was caused by a power failure. I would rather duplicate the card and have a spare available in the event one becomes corrupt.
I have not tried to divide up the storage on the 32 Gb microSD card yet. The Odroid C2: http://www.hardkernel.com/main/products/prdt_info.php Dave KU4B On Wed, 2016-05-04 at 13:04 -0500, Bruce Martin wrote: > I know that dd is one of those fundamental linux commands that are used > occasionally but like rm need to be used carefully. > > I admit to being a rather “Appliance” operator when it come stop Linux these > days. I use the bistro as it is and usually install only the software and > updates that are part of the distribution. In the past I did download the > source of the latest version of software i wanted to run and compiled it > after tweaking the makefile and sometimes some of the code. These days I do > not do that very much. Lazy? Maybe but the distributions have gotten better > at keeping things reasonably up to date and stable and bleeding edge is not > my forte anymore. > > That being said I have been playing around with Raspberry Pi for the last few > years. I tend to buy two or three of each version as they come out. I have > two deployed for specific Ham radio stuff and am embarking on a project to > help some friends out by setting up some Broadband Speed monitoring nodes. > One of the shortcomings of the Raspberry Pi (RPi) is the use of SD cards. > Even when you are not doing a lot of writing to the card the life of a card > seems to be less than a year or so. > > I have read that the newer SDHC cards incorporate wear leveling much like an > SSD does. With this in mind I want to set up an SD card but only partition it > to use a third or a fourth of the disk space and leave the rest of the card > free and unformatted for wear leveling use. > > My experience, thus far, is that when setting up a card for the RPi the > distribution expands itself to use up the entire card. I want to try setting > things up on an 8GB car. After everything is configured I want to create an > image of the card and then write that image to a 16GB or 32GB card. Is there > a parameter in dd to limit how much of the card is used and leave the rest as > unformatted? Do I need to create the partitions on the 32GB card and image > each partition separately from the 8GB card and write that image to a > specific partition on the 32GB card? Is there some other/better way to do > this? > > I want to try to get to the point of being able to set up a RPi and let it > sit and run for years and not have to redo the card every year. Stories of > servers stuck in closets or left in a wall void during remodeling come to > mind. We had an APRS Igate node at Vanderbilt that ran the better part of a > decade without a purposeful reboot that was running on a floppy drive distro > that Sean Jewett and a few others worked on. I want that kind of longevity in > the RPi nodes I am deploying. > > Thoughts? > Suggestions? > Questions? > > Bruce > > -- > Bruce W. Martin, KQ4TV > Trustee for AA4VU > Vanderbilt University Amateur Radio Club > > -- -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to nlug-talk@googlegroups.com To unsubscribe from this group, send email to nlug-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en --- You received this message because you are subscribed to the Google Groups "NLUG" group. To unsubscribe from this group and stop receiving emails from it, send an email to nlug-talk+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
