On 17/03/10 06:43, [email protected] wrote:
Hi,
I am using vim7.2 to edit and save a binary mbr file. It contains 512
bytes. However, inside vim, it shows one additional byte at address
513. After editing, the saved file is one byte more. So it becomes
invalid mbr. I have found a winvi and xvi both claim can edit bindary
file. I still want to see whether I can use vim. So can anyone tell me
how to edit and save binary file safely in vim?
Thanks
Frank
I suspect the additional byte is a linefeed (0x0A) at the very end.
To avoid that, open the file with (from within Vim)
:e ++bin filename
or (at the shell prompt)
vim -b filename
This sets 'binary' (locally), which will not only remember the presence
or absence of a final LF as the 'eol' local option, but also use the
value to remember whether or not to write an end-of-line at the end of
the last line when writing the file back to disk.
See also
:help 23.4
(the whole section)
:help hex-editing
man xxd
Best regards,
Tony.
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