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Leffmann · 24 September 2012, 21:15

Yes it's that $68 that causes the boot block checksum to not add up. Set it to 0 and you get the correct checksum.

AmigaOS will only attempt to boot a disk when the checksum is $FFFF FFFF and the first 4 bytes are $444F 5300. Most antivirus utilities should be able to calculate the checksum for you, it's a quick way to find out if this is the cause.

24 September 2012, 21:15	#5
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	Yes it's that $68 that causes the boot block checksum to not add up. Set it to 0 and you get the correct checksum. AmigaOS will only attempt to boot a disk when the checksum is $FFFF FFFF and the first 4 bytes are $444F 5300. Most antivirus utilities should be able to calculate the checksum for you, it's a quick way to find out if this is the cause.