Reloading USB mass storage disk [think Logical Disk Manager refres

Hello,

I have a USB mass storage device that, once enumerated, fails all disk
access commands. At some point the IO is enabled via SCSI Pass Through
Interface. Problem is Windows does not automatically [or at least
immediately] reload the disk. This can only be done by refreshing the Logical
Disk Manager. How can this be done from a user application?

Things I've tried:

- Issuing IOCTL_STORAGE_FIND_NEW_DEVICES to the PhysicalDrive; works on XP,
does not on Vista and 7
- Trying the method in "devcon.exe rescan"; again, works in XP, not in Vista
or 7
- A few other random storage IOCTLs and even closing and reopening the
HANDLE

Any ideas how this can be done from a standalone user application and
without resetting the whole USB device?

Thank you in advance.

-- ilya

The usual remount sequence, read the docs on FSCTL_DISMOUNT_VOLUME

--
Maxim S. Shatskih
Windows DDK MVP

http://www.storagecraft.com

"ilya" <> wrote in message news870921F-3B3E-4AC1-ACDD-...
> Hello,
>
> I have a USB mass storage device that, once enumerated, fails all disk
> access commands. At some point the IO is enabled via SCSI Pass Through
> Interface. Problem is Windows does not automatically [or at least
> immediately] reload the disk. This can only be done by refreshing the Logical
> Disk Manager. How can this be done from a user application?
>
> Things I've tried:
>
> - Issuing IOCTL_STORAGE_FIND_NEW_DEVICES to the PhysicalDrive; works on XP,
> does not on Vista and 7
> - Trying the method in "devcon.exe rescan"; again, works in XP, not in Vista
> or 7
> - A few other random storage IOCTLs and even closing and reopening the
> HANDLE
>
> Any ideas how this can be done from a standalone user application and
> without resetting the whole USB device?
>
> Thank you in advance.
>
> -- ilya