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Comments:
<0> ?
<1> ooh
<1> notrunc prevents it from shrinking the file
<0> for sync, is it true what I wrote above?
<1> so, if your 'of' is already 1M, with notrunc, it will leave it as 1M, without, it will shrink it to match the if
<1> well, sort of
<1> sync writes the full blocks, even if 'if' doesn't fill that block
<1> so, a 4 byte file, with a bs of 1M, it will write the whole 1M
<0> ok, but if the file had been 1M large, there would have been no difference at the output with or without the sync option, right?
<1> yea...
<1> unless it was 1mb + 1byte, then it would be 2MB large
<0> ok
<1> so... its incredibly rare that it would be exactly 1M
<0> ok, but in my case the file written by dd_rescue is exactly the size of the drive.
<1> is it, byte per byte?
<1> if ddrescue just did a raw copy, no sync or notrunc, then its a non-issue
<1> IF you used 512byte blocks, then sync would make sense, for hard drives
<1> but, anything else, and dont use it
<0> let me verify sth
<1> :0
<1> :)
<0> the default sync frequency of dd_rescue is 512*softbs
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