SR_BOOT_LOADER_SIZE
if (bb->bb_bootldr_size > SR_BOOT_LOADER_SIZE * DEV_BSIZE) {
bb->bb_bootldr_size, SR_BOOT_LOADER_SIZE * DEV_BSIZE);
#define SR_BOOT_BLOCKS_OFFSET (SR_BOOT_LOADER_OFFSET + SR_BOOT_LOADER_SIZE)
#define SR_BOOT_SIZE (SR_BOOT_LOADER_SIZE + SR_BOOT_BLOCKS_SIZE)
nblocks = howmany(SR_BOOT_LOADER_SIZE, SR_FS_BLOCKSIZE / DEV_BSIZE);