exfat on SD card getting mounted read-only

Tue Aug 26 04:04:36 UTC 2014

I did add the word "exfat" to my original search line and results are
different but none seem on the mark.

Search term " sd exfat card will mount only read only fedora 20 "

Perhaps time to start looking at how other machines see the card - and how
other cards work formatted as you like in your affected Fedora machine.  A
theme I seem to see is that not all cards work with all readers in all
computers running all OS's.  Oh - how could this be?!?

On Mon, Aug 25, 2014 at 8:54 PM, Tod Merley <todbot88 at gmail.com> wrote:

> My card is a Samsung 32 EVO Micro SD HC I held in an SD adapter and used
> and formatted by my Nikon camera.
>
> [tmerley at localhost ~]$ journalctl -f
> -- Logs begin at Mon 2014-08-25 06:16:28 PDT. --
> Aug 25 20:28:07 localhost.localdomain dhclient[1015]: ...
> ... ... [starting line just before SD card plugged in] ...
> Aug 25 20:23:00 localhost.localdomain gnome-session[1411]: Window manager
> warning: Log level 8: meta_window_focus: assertion '!window->overr... failed
> Aug 25 20:24:27 localhost.localdomain kernel: mmc0: cannot verify signal
> voltage switch
> Aug 25 20:24:27 localhost.localdomain kernel: mmc0: new ultra high speed
> SDR50 SDHC card at address 0001
> Aug 25 20:24:27 localhost.localdomain kernel: mmcblk0: mmc0:0001 00000
> 29.2 GiB
> Aug 25 20:24:27 localhost.localdomain kernel:  mmcblk0: p1
> Aug 25 20:24:28 localhost.localdomain kernel: SELinux: initialized (dev
> mmcblk0p1, type vfat), uses genfs_contexts
> Aug 25 20:24:28 localhost.localdomain udisksd[1516]: Mounted
> /dev/mmcblk0p1 at /run/media/tmerley/NO_NAME on behalf of uid 1000
> Aug 25 20:25:08 localhost.localdomain NetworkManager[640]: <warn>
> nl_recvmsgs() error: (-33) Dump inconsistency detected, interrupted
> ... [ending one line after SD card plugged in] ...
> ... [unmount remove re-insert] ...
> Aug 25 20:42:54 localhost.localdomain udisksd[1516]: Cleaning up mount
> point /run/media/tmerley/NO_NAME (device 179:1 is not mounted)
> Aug 25 20:42:54 localhost.localdomain udisksd[1516]: Unmounted
> /dev/mmcblk0p1 on behalf of uid 1000
> Aug 25 20:43:32 localhost.localdomain kernel: mmc0: card 0001 removed
> Aug 25 20:43:36 localhost.localdomain kernel: mmc0: cannot verify signal
> voltage switch
> Aug 25 20:43:36 localhost.localdomain kernel: mmc0: new ultra high speed
> SDR50 SDHC card at address 0001
> Aug 25 20:43:36 localhost.localdomain kernel: mmcblk0: mmc0:0001 00000
> 29.2 GiB
> Aug 25 20:43:36 localhost.localdomain kernel:  mmcblk0: p1
> Aug 25 20:43:36 localhost.localdomain kernel: SELinux: initialized (dev
> mmcblk0p1, type vfat), uses genfs_contexts
> Aug 25 20:43:36 localhost.localdomain udisksd[1516]: Mounted
> /dev/mmcblk0p1 at /run/media/tmerley/NO_NAME on behalf of uid 1000
>
>
> [tmerley at localhost ~]$ dmesg
> ... ...
> [  202.037022] mmc0: cannot verify signal voltage switch
> [  202.134193] mmc0: new ultra high speed SDR50 SDHC card at address 0001
> [  202.160009] mmcblk0: mmc0:0001 00000 29.2 GiB
> [  202.163517]  mmcblk0: p1
> [  203.258077] SELinux: initialized (dev mmcblk0p1, type vfat), uses
> genfs_contexts
>
> [tmerley at localhost ~]$ mount
> ... ...
> /dev/mmcblk0p1 on /run/media/tmerley/NO_NAME type vfat
> (rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)
>
>
> On Mon, Aug 25, 2014 at 7:58 PM, jd1008 <jd1008 at gmail.com> wrote:
>
>>
>> On 08/25/2014 08:40 PM, Ed Greshko wrote:
>>
>>> On 08/26/14 03:15, jd1008 wrote:
>>>
>>>> My flash card slot in the laptop is (per lspci):
>>>> 03:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro
>>>> Host Adapter (rev 21)
>>>>
>>>> I insert into it a SanDisk 16GB Extreme SD card. This card is not
>>>> marked as a secure card.
>>>> At least, it does not say so on the card.
>>>>
>>>> It gets automounted read only as:
>>>>
>>>> /dev/mmcblk0p1 on /run/media/jd/3D90-BEAB type fuseblk
>>>> (ro,nosuid,nodev,relatime,user_id=0,group_id=0,allow_
>>>> other,blksize=4096)
>>>>
>>>> # umount -f /dev/mmcblk0p1
>>>>
>>>> # /sbin/mount.exfat -o rw /dev/mmcblk0p1 /mmcblk0p1
>>>> FUSE exfat 1.0.1
>>>> WARN: `/dev/mmcblk0p1' is write-protected, mounting read-only.
>>>>
>>>> So, what is causing it to be mountable read-only, and not get mounted
>>>> read/write?
>>>>
>>> Did you format your card using the RPMfusion exfat-utils or did you do
>>> it on Windows?  Whichever way you did it, you can try the other way.  If
>>> that doesn't work, you may want to ask on the RPMFusion list and/or file a
>>> bugzilla there.
>>>
>>>  If I recall correctly, I had indeed originally formatted it as exfat on
>> windows.
>> But after that I was found the rpmfusion exfat-utils and installed them
>> on my fc20.
>>
>>
>>
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>
>
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