> Previously Windows disks could be described as "Removable".
> With XP this control has vanished.

If you just want all writes flushed to disk:
  Double click My Computer
  Right-Click the drive
  Click Properties
  Click Hardware tab
  Click Policies tab
  Uncheck "Enable write caching on the disk"

If you just want to insure specific files get flushed, make sure you call
Flush() against the stream, or set the AutoFlush option.

> When a disk in a device attrached to the PC
> is shared so that XP can scan the disk as
> well (via SCSI in this case),

I HOPE you don't mean you have two PCs on the same SCSI bus, talking to the
same drive... that would be bad unless you're writing the underlying
file-system and coordinating writes between the multiple masters.  (see this
done, hated it with a passion)

> I need therefore to write a .net "Explorer-like" app that
> reverses this effect, and guarantees that read and write
> operations are complete

See above

> leaving the disk's FAT table up
> to date, so that disk sharing can continue without any
> errors being introduced.

I doubt that is reasonably possible.  Why not just use Windows shares on the
owning machine?

Marc

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