System Workbench for STM32

Running bootloader + application solution

Itried to change the ld file

FLASH (rx)  : ORIGIN = 0x8000000, LENGTH = 128K
come =>
FLASH (rx)  : ORIGIN = 0x8001800, LENGTH = 122K

in the CMSIS driver /Drivers/CMSIS/system_stm32f1xx.c I change this

define VECT_TAB_OFFSET 0x1800 /*!< Vector Table base offset field. */

but when I use “run” button to program flash ,exlipse overwrite the bootloader.
What is the problem?