SBLOCKSIZE
fs = malloc(SBLOCKSIZE);
sblock_try[i] / DEV_BSIZE, SBLOCKSIZE,
buf_size == SBLOCKSIZE &&
if (! (part_length < (sblock_try[i] + (SBLOCKSIZE / DEV_BSIZE))
|| ! devread (0, sblock_try[i], SBLOCKSIZE, (char *) SUPERBLOCK)))