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fs: compute checksum correctly for large bootblocks #199

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Mar 2, 2024
Merged

fs: compute checksum correctly for large bootblocks #199

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4 changes: 2 additions & 2 deletions amitools/fs/block/BootBlock.py
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Original file line number Diff line number Diff line change
Expand Up @@ -52,9 +52,9 @@ def _calc_chksum(self):
all_blks = [self] + self.extra_blks
n = self.blkdev.block_longs
chksum = 0
for blk in all_blks:
for b, blk in enumerate(all_blks):
for i in range(n):
if i != 1: # skip chksum
if not (b == 0 and i == 1): # skip chksum
chksum += blk._get_long(i)
if chksum > 0xFFFFFFFF:
chksum += 1
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