On Sat, 22 Feb 2014 17:18:11 +0000, Hendrik Boom wrote: > On Sat, 22 Feb 2014 16:38:34 +0200, Andrei POPESCU wrote: > >> On Sb, 22 feb 14, 14:33:24, Hendrik Boom wrote: >>> I have a problem with my USB sticks mysteriously becoming read-only. >> >> You didn't provide any information about make, model, size, >> partitioning, file systems, etc. Also the relevant lines from syslog >> when you plug in the stick are very useful for diagnosing. >> >> Kind regards, >> Andrei > > Thank you. I will investigate and provide syslog data for the old read- > only sticks and the new writable ones when I get the chance. > > Of the old USB sticks -- the ones that turned read-only -- I currently > am in possession of only one, and it worked fine this morning if I am > root when I mount it and write it. It's labelled Lexar USB3.0 64G. I > haven't tried it on my wife's Mac since. > > If I have to be root, perhaps it's some mount permission problem I'm > getting. > > Of course it could be that I missed this one stick when I was trying the > old failing sticks last week and it's been OK all along. Im going to > have to keep careful records. > > The others I handed to a friend a few days ago, who said he wanted to > try them out on his equipment. I'll see them again next Wednesdays. > > -- hendrik
I think I may have a solution. I suspect the problem is with improperly unmounted/ejected (teminology varies) USB sticks. On some systems it can be hard to figure out the proper unmounting protocol. But when I mount such a stick on Debian, it gets mounted at best as read- only. And often it does it automatically, and as root instead of as the user currently logged in (assuming there is only one) I have to check if it's mounted, and unmount it as root. Then to do an fsck -a -y so that it will indeed fix problems. Usually the only problem is that a flag has been said telling me it hadn't been properly unmounted last time it was used. -- hendrik -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/lp7pio$bke$1...@ger.gmane.org
