Therefore, you should create copies of the materials you are appraising, which can then be processed and arranged instead of the originals during future steps. Files could be accidentally damaged while you work with them, and the last thing you want to do is lose the only copy of an important file. Creating working copies of filesĪccidents can always happen when working with born-digital materials.
Additionally, if they are altered, regularly tracking checksums can give you an idea of which process is causing the changes. You should continue to regularly monitor the fixity of your files by re-validating their checksums, as any work you do on the files has a chance of unintentionally altering them. See this page’s Resources section for additional guidance on building a forensic workstation. If you know that you are going to be creating a large number of disk images, the workstation you use should have access to enough storage space to house the ones you are working on.
For example, disk images may take up a lot of space because they are always the size of the entire capacity of the original disk. Different institutions have different needs when it comes to how powerful and versatile their workstations need to be. ‘Clean’ in this case means that it is isolated from potential sources of harm by being regularly scanned for viruses.īefore you start, your workstation should be installed with all of the hardware peripherals and software you will need for pre-ingest procedures and scanned for viruses again.
Preparing a processing stationĪs briefly discussed in the transfer section, it is important to prepare a clean workstation to use while working with born-digital material. This section will discuss a number of steps that you may want to take when doing your own appraisal, and explore the unique issues associated with appraising born-digital materials, but it is expected that readers will be familiar with the general theory and principles of appraisal. This is where you have the chance to take stock of what you have, make working copies of the materials, and gather important information to be used during the accessioning process. After the digital materials you want to work with have been transferred, the next step is review and appraisal.
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