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#Try "status=none" $ dd if=boot1h of="/dev/r$temp1" status=none

From dd (coreutils) 8.21 docs:

'status=LEVEL'
     Transfer information is normally output to stderr upon receipt of
     the 'INFO' signal or when 'dd' exits.  Specifying LEVEL will adjust
     the amount of information printed, with the last LEVEL specified
     taking precedence.

     'none'
          Do not print any informational or warning messages to stderr.
          Error messages are output as normal.

     'noxfer'
          Do not print the final transfer rate and volume statistics
          that normally make up the last status line.

     'progress'
          Print the transfer rate and volume statistics on stderr, when
          processing each input block.  Statistics are output on a
          single line at most once every second, but updates can be
          delayed when waiting on I/O.

Add status=none:

dd if=boot1h of="/dev/r$temp1" status=none

From the dd (coreutils) 8.21 docs:

'status=LEVEL'
     Transfer information is normally output to stderr upon receipt of
     the 'INFO' signal or when 'dd' exits.  Specifying LEVEL will adjust
     the amount of information printed, with the last LEVEL specified
     taking precedence.

     'none'
          Do not print any informational or warning messages to stderr.
          Error messages are output as normal.

     'noxfer'
          Do not print the final transfer rate and volume statistics
          that normally make up the last status line.

     'progress'
          Print the transfer rate and volume statistics on stderr, when
          processing each input block.  Statistics are output on a
          single line at most once every second, but updates can be
          delayed when waiting on I/O.

dd if=boot1h of="/dev/r$temp1" status=none

from dd (coreutils) 8.21 docs:

'status=LEVEL'
     Transfer information is normally output to stderr upon receipt of
     the 'INFO' signal or when 'dd' exits.  Specifying LEVEL will adjust
     the amount of information printed, with the last LEVEL specified
     taking precedence.

     'none'
          Do not print any informational or warning messages to stderr.
          Error messages are output as normal.

     'noxfer'
          Do not print the final transfer rate and volume statistics
          that normally make up the last status line.

     'progress'
          Print the transfer rate and volume statistics on stderr, when
          processing each input block.  Statistics are output on a
          single line at most once every second, but updates can be
          delayed when waiting on I/O.

#Try "status=none" $ dd if=boot1h of="/dev/r$temp1" status=none

From dd (coreutils) 8.21 docs:

'status=LEVEL'
     Transfer information is normally output to stderr upon receipt of
     the 'INFO' signal or when 'dd' exits.  Specifying LEVEL will adjust
     the amount of information printed, with the last LEVEL specified
     taking precedence.

     'none'
          Do not print any informational or warning messages to stderr.
          Error messages are output as normal.

     'noxfer'
          Do not print the final transfer rate and volume statistics
          that normally make up the last status line.

     'progress'
          Print the transfer rate and volume statistics on stderr, when
          processing each input block.  Statistics are output on a
          single line at most once every second, but updates can be
          delayed when waiting on I/O.

dd if=boot1h of="/dev/r$temp1" status=none

The status= flag controls which info to suppress outputting to stderr; 'noxfer' suppresses transfer stats, 'none' suppresses all

dd (coreutils) 8.21

dd if=boot1h of="/dev/r$temp1" status=none

from dd (coreutils) 8.21 docs:

'status=LEVEL'
     Transfer information is normally output to stderr upon receipt of
     the 'INFO' signal or when 'dd' exits.  Specifying LEVEL will adjust
     the amount of information printed, with the last LEVEL specified
     taking precedence.

     'none'
          Do not print any informational or warning messages to stderr.
          Error messages are output as normal.

     'noxfer'
          Do not print the final transfer rate and volume statistics
          that normally make up the last status line.

     'progress'
          Print the transfer rate and volume statistics on stderr, when
          processing each input block.  Statistics are output on a
          single line at most once every second, but updates can be
          delayed when waiting on I/O.