• SIGNA MR355 / SIGNA MR360
  • Service Manual
  • 5856356-3EN Revision 5.0
  • Basic Service Documentation. Copyright General Electric Company.
  • Object ID: 00000018WIA30314450GYZ
  • Topic ID: id_2021949 Version: 3.4
  • Date: Nov 10, 2020 11:26:50 AM

Checking the SW Media integrity (Iso # Checksum)

Application DVD Checksum

Note:

Refer to the MR Service Pack Software Matrix (DOC1667089), available from the online documentation library and make sure the necessary service pack media (if any) is available. Do not start the software load until this media is available.

  1. Insert the Application DVD into DVD drive.
  2. Open a command window.
    Note: The Shell window can only be launched when the EA3 user is included in the authorized EA3 group. Users not in this EA3 group will not have access to launch the Shell window. If you are not logged in as the proper logon user, log out and then log back on as the correct EA3 user with the authorized permissions.
  3. Login as root with Signa default root password and run the following two commands:
    Note: If the checksum does not match with the data from the MR Service Pack Software Matrix (DOC1667089), STOP the installation process and contact GEHC Services for support. Note that the output of the dd command “x.x MB/s (data transfer rate)” below may vary; this specific param does not have to match up with the number as shown below. Due to the data size of the application DVD, the dd command may take up to 15 minutes to complete.
    1. # isosize -x /dev/sr0 
       sector count: 1995763, sector size: 2048
      Note: The sector count and sector size here should be used in the dd command below.
    2. # dd if=/dev/sr0 bs=2048 count=1995763 conv=notrunc,noerror | sha256sum
      1995763+0 records in
1995763+0 records out
4087322624 bytes (4.1 GB) copied, 535.142 s, 7.6 MB/s
751cce6450ed619b65f19480eb46043746f17bb5004ac9ebb94d31b9b8acb2cb  -

Service Pack DVD Checksum

Note:

Refer to the MR Service Pack Software Matrix (DOC1667089), available from the online documentation library and make sure the necessary service pack media (if any) is available. Do not start the software load until this media is available.

  1. Remove the Application DVD and insert the Service Pack DVD into DVD drive.
  2. Run the following two commands:
    Note: If the checksum does not match with the data from the MR Service Pack Software Matrix (DOC1667089), STOP the installation process and contact GEHC Services for support. Note that the output of the “dd” command “x.x MB/s (data transfer rate)” may vary, this specific param does not have to match up with the number as shown below.
    1. # isosize -x /dev/sr0
      sector count: 188, sector size: 2048
(Note that the sector count and sector size here should be used in the dd command below.)
    2. # dd if=/dev/sr0 bs=2048 count=188 conv=notrunc,noerror | sha256sum
      188+0 records in
188+0 records out
385024 bytes (385 kB) copied, 0.254683 s, 1.5 MB/s
268b783b0d57b7f4db1e4ded301210cfec956ddbe1857f8c845d432347d0b6ab  -