Device Size
After you create the ES GuardPoint on the device, the device size reported to applications is the size of the device minus the space reserved for the CTE Private Region. This can lead to a discrepancy between the disk size reported by some applications versus the size reported by system utilities.
Do not shrink ES GuardPoints. Due to relocation of user data from CTE Private Region, if you shrink the device, you may corrupt data on the device.