How do I access multiple partitions on a SD card in Windows?
did you try this workaround posted above and did it work for you? Please let us know!
Windows doesn't allow seeing partitions on removable media (USB, SD card, etc.). One way to make this possible is to modify the driver. Here is an example on how to do it for
a USB drive, but I think it could also be used for an SD card. One needs to download a
Hitachi filter driver for removing the Removable Media Bit - xpfildrvr1224_320.zip
By modifying the included INF file the filter driver can be used with any other
For the device detection there are the lines in section [cfadisk_device]:
%Microdrive_devdesc% = cfadisk_install,IDEDiskIBM-DSCM-11000__________________________SC2IC801
"IDEDiskIBM-DSCM-11000__________________________SC2IC801" is the device ID of one of the supported Microdrives.
In analogy to these lines we add one line for each 'removable' USB drive we want to turn into a USB hard drive.
The ID is found in the Windows device management: Expand 'Disk drives', right click your USB drive,
select Properties. On the tab "Details" under XP the item "Device instance ID" is already selected.
Click on the ID in the List and press Ctrl+C, this copies the ID into the Windows Clipboard and can be pasted
somewhere else with Ctrl+V.
XP up to SP1 shows the tab "Details" only when the environment variable DEVMGR_SHOW_DETAILS=1 is set:
DevMgr_Show_1.reg download and doubleclick the file, then relogon to take effect.
We need the fat part:
%Microdrive_devdesc% = cfadisk_install,USBSTORDISK&VEN_LEXAR&PROD_JUMPDRIVE&REV_1.30
Or much more simple the universal way for any USB disk:
%Microdrive_devdesc% = cfadisk_install,USBSTORGenDisk
In the last line of the INF file we change "Hitachi Microdrive" into something nice as "RemovableToFixed".
In the device manager again right-click the USB drive, "Update driver...", then "No, not this time" -> Next ->
"Install from a list or..." -> Next -> "Don't search." -> Next -> "Have Disk" -> browse to the INF file here.
Now "RemovableToFixed" should be in the list -> Next -> Confirm the two warnings -> Finish.
Now the drive is redetected, actually as USB hard drive. The drive can be partitioned, the policy
"Optimize for performance" indeed activates a write cache on FAT formatted drives and Windows will create
the beloved folder "System Volume Information"...
cfadisk.sys aka Hitachi Microdrive Filter Driver