[PLUG] SD cards always mount read-only

[Fernando Freire]

This may seem silly to suggest, but have you could attempt to throw up
a quick Windows VM and see if you have RW access to the drive then.
May not be optimal, but at least it'll get you support from SanDisk?

On Mon, Oct 10, 2011 at 4:32 PM, John Jason Jordan <johnxj at comcast.net> wrote:
> On Sat, 8 Oct 2011 12:22:57 -0700
> John Jason Jordan <johnxj at comcast.net> dijo:
>
> <Long discussion of details snipped>
>
> Today I spent a couple hours trying everything I could think of,
> including live CDs of Lucid, Knoppix, and the utility/rescue CDs GRML
> and The Ultimate Boot CD. I used mkfs, parted and Gparted, palimpsest,
> fsck and several others that I can't remember now. Nothing could touch
> it. I can't reformat it, delete, move or resize the partition, edit the
> boot flag, or change the disk label. Everything reported the same error:
> "the device is read-only."
>
> Then I called SanDisk technical support, but after 20 minutes on hold I
> gave up. They also have web-based chat support where I was finally able
> to communicate with someone. He insisted that he couldn't help me until
> I had the device inserted in a Windows computer. I asked for an RMA and
> he said he could not give me an RMA until he was able to "troubleshoot"
> the card on a Windows computer.
>
> I am becoming increasingly suspicious that SanDisk has some kind of
> rootkit that blocks using the card on any but the devices they are
> willing to support, and that does not include Linux.
>
> Tomorrow I must go to PSU for class. I will take the card with me in
> the hopes of finding a Windows laptop that has an SD card reader. I can
> check out a laptop at the library, but I don't know if they have SD
> card slots. Or I can go to computer help in the basement of Smith.
> Someplace there must be a computer I can try it with.
>
> If I do not find success tomorrow then I will return it to
> 1SaleADay.com where I bought it. Mind you, the problem may be in the
> Thinkpad, but either way the card is useless if I can't get it to work
> in the Thinkpad. Like, what value is a read-only storage device?
>
> PS: I have also had problems with SanDisk USB sticks in the past -
> same sort of locked features that the user cannot delete. I disrecommend
> SanDisk.
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