Thanks for the ideas, everyone. I emailed the sellers of this kit, Canakit, last week. They said they'd gotten a *lot* of complaints about not being able to format or write to their cards using a Mac, so they'd send me one they say will work. If that doesn't do the job, I guess Windows it is. But it sounds like, somehow, it's the card or reader in use. I must have gotten lucky and grabbed a similar one from Best Buy for my testing.
Sent from my iPhone > On Jun 5, 2016, at 18:25, Sabahattin Gucukoglu <listse...@me.com> wrote: > > OK, try this. Be careful though, it’s dangerous. > > Unmount the disk, as before. Now, try wiping out the first megabyte of the > disk, with a command like this: > dd if=/dev/zero of=/dev/disk3 bs=1m count=1 > > In that command, disk3 is the hypothetical disk. Replace it with the real > one. Get it right or you lose data! > > If it fails, record the reason, and try again with sudo. If that fails, I’m > inclined to think you must be looking at write-protection, of some kind or > another, whether implemented in hardware or not. > > -- > The following information is important for all members of the Mac Visionaries > list. > > If you have any questions or concerns about the running of this list, or if > you feel that a member's post is inappropriate, please contact the owners or > moderators directly rather than posting on the list itself. > > Your Mac Visionaries list moderator is Mark Taylor and your owner is Cara > Quinn - you can reach Cara at caraqu...@caraquinn.com > > The archives for this list can be searched at: > http://www.mail-archive.com/macvisionaries@googlegroups.com/ > --- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to macvisionaries+unsubscr...@googlegroups.com. > To post to this group, send email to macvisionaries@googlegroups.com. > Visit this group at https://groups.google.com/group/macvisionaries. > For more options, visit https://groups.google.com/d/optout. -- The following information is important for all members of the Mac Visionaries list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your Mac Visionaries list moderator is Mark Taylor and your owner is Cara Quinn - you can reach Cara at caraqu...@caraquinn.com The archives for this list can be searched at: http://www.mail-archive.com/macvisionaries@googlegroups.com/ --- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to macvisionaries+unsubscr...@googlegroups.com. To post to this group, send email to macvisionaries@googlegroups.com. Visit this group at https://groups.google.com/group/macvisionaries. For more options, visit https://groups.google.com/d/optout.
