NEW access Issue With CF Express Type B card on XH2s

[dannycooke]

Hi,  i’ve had a look around the internet and can’t seem to find anyone with this issue. 

Long story short is I used to be able to access my CF Express type B cards that are formatted by my XH2s on my pc and my mac.  They would pop up as an external drive through an external Sabrient reader.  Now they don’t?!  Has something changed in the firmware? something broken.

A few observations:

It now happens with all of my Sabrient cards.

I bought a new Lexar reader and it does it with that too.

If i format the cards on my RED camera and then mount on the computer they work fine as expected.  Once I put back in camera and format the card then place back to PC it doesn’t work.

The only way i’ve been able to access the card is while it is plugged into the camera but this seems a lot slower to transfer data.

Has anyone else noticed this? would appreciate any solutions. 

[Sandro_gsp]

11 hours ago, dannycooke said:

Hi,  i’ve had a look around the internet and can’t seem to find anyone with this issue. 

Long story short is I used to be able to access my CF Express type B cards that are formatted by my XH2s on my pc and my mac.  They would pop up as an external drive through an external Sabrient reader.  Now they don’t?!  Has something changed in the firmware? something broken.

 

I haven't had any problem with my XH2s and CFexpress card, but I struggled for almost 1 year with a 256GB SD card .
To cut it short : I finally solved the problem formatting the SD card using windows DiskPart command.
I think the key was removing everyting from the SD card using the "clean" command.
Diskpart is rather technical, I hope you can understand how to use it.
Search google for :   "diskpart erase partitions"

Hope this helps.   
 

[dannycooke]

Thanks i’ll give this a try 

[dannycooke]

10 hours ago, Sandro_gsp said:

I haven't had any problem with my XH2s and CFexpress card, but I struggled for almost 1 year with a 256GB SD card .
To cut it short : I finally solved the problem formatting the SD card using windows DiskPart command.
I think the key was removing everyting from the SD card using the "clean" command.
Diskpart is rather technical, I hope you can understand how to use it.
Search google for :   "diskpart erase partitions"

Hope this helps.   
 

I just want to say thanks very much!  That worked a treat - did as said used ‘clean all’ command and then waiting a while for it to do its thing, once I put the card back into the camera and initialised then removed it and put it back onto the PC it worked and popped up as usual.  Somehow overtime all 3 of my cards must have become corrupted.  But doing this worked, again Many thanks 

Here are the steps I took so that if anyone else runs into this issue they can fix it:

1.  Put express card into the reader and plug into pc (you should hear a sound, but the card will not mount).  

2.  Run ‘Command Prompt’ as an administrator,  you can find it in Start Menu and right click then run as administrator. 

3. type in ‘diskpart’

This will load the software, be careful here as you could accidentally format the wrong drive.

4.  when DISKPART> is displayed type ‘list disk’.   wait a while and a list of all disks on the system will appear, look for the disk that is the size, in my case it was 476GB.  double check this is the right disk as you will format and erase all content on this disk to make it work. 

5.  type ‘select disk 3’  in my case disk number 3 was the right one.

6.  type ‘clean all’   it took mine about 15 mins to work, it looks like it is doing nothing but it isn’t, it’s doing a full format.  You will get a prompt ‘DiskPart succeeded in cleaning the disk’

7.  Remove the disk and place back into fuji camera, then format/initialise as normal. 

8.  eject disk and place back into PC and it should mount as usual.   Hopefully that works!

Edited July 20, 2025 by dannycooke

[Sandro_gsp]

On 7/20/2025 at 10:26 AM, dannycooke said:

I just want to say thanks very much!  That worked a treat - did as said used ‘clean all’ command and then waiting a while for it to do its thing, once I put the card back into the camera and initialised then removed it and put it back onto the PC it worked and popped up as usual.  Somehow overtime all 3 of my cards must have become corrupted.  But doing this worked, again Many thanks 

 

the "clean" command is enough ( and it takes few seconds) .
I think I know what happens :  every SD card and every cf-express  card , come formatted by the factory.
Reformatting them is not enough : the partition table is kept.
Most probably the partition table (the first sectors of a disk or Usb card) are prepared by the factory  in a way not always accepted by windows.
The diskpart "clean" command simply remove all partition information, so that when you format the card again, a new partition table is created, compatible with windows.

Edited August 4, 2025 by Sandro_gsp

[jakabasej8]

On 7/20/2025 at 6:12 AM, Sandro_gsp said:

I haven't had any problem with my XH2s and CFexpress card, but I struggled for almost 1 year with a 256GB SD card .
To cut it short : I finally solved the problem formatting the SD card using windows DiskPart command.
I think the key was removing everyting from the SD card using the "clean" command.
Diskpart is rather technical, I hope you can understand how to use it.
Search google for :   "diskpart erase partitions"

Hope this helps.   

That is an absolute lifesaver of a solution