Toshiba e-STUDIO 2555C Service Manual page 387

[C] Creating HDD partition (Format HDD)
When the HDD is replaced or UI data, etc. are downloaded using the USB storage, it is necessary to
format a partition in the HDD before downloading. In this case, the partition is created in the HDD with
this function.
Notes:
• When downloading with a download jig, it is not necessary to format a partition in advance.
• Perform the HDD partition formatting only when a new HDD is installed since all data in the
current HDD are erased by this operation.
[D] Formatting SRAM data (Clear SRAM)
When SRAM is replaced with a new one, abnormal values may be written in the new SRAM. SRAM
data must be formatted with this function for such case.
Notes:
• This function is required only when a new SRAM is installed.
• Do not perform this function in cases other than the installation of a new SRAM because all data
in the SRAM will be deleted with this function.
[E] Backing up/restoring encryption key and license (Key Backup Restore)
When the SRAM board (for the SYS board) or the SYS board is replaced or initialized, the encryption
key and license are erased. Therefore, they need to be backed up or restored with this function.
Configurations and functions of the "5.Key Backup Restore" menu.
1. Key SRAM to FROM
Restore the encryption key from SRAM to FROM.
2. Key FROM to SRAM
Back up the encryption key from FROM to SRAM.
3. License SRAM to FROM
Restore the license from SRAM to FROM.
4. License FROM to SRAM
Back up the license from FROM to SRAM.
5. ADIKey SRAM to FROM
Restore the ADIKey from SRAM to FROM.
6. ADIKey FROM to SRAM
Back up the ADIKey from FROM to SRAM.
[F] Erasing HDD securely (Erase HDD Securely)
This function is used when installing Data Overwrite Enabler (GP-1070) or before discarding the HDD.
It overwrites all the used areas on the HDD with the selected data, and makes it unusable.
After selecting this function, specify the level below to be overwritten.
1: LOW (Normally use this setting.)
This is the standard overwriting method.
2: MEDIUM
This overwriting method is more secure than LOW. The erasing time is between LOW and
HIGH.
3: HIGH
This is the most secure overwriting method. It takes the longest time to erase data.
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