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  2. Write protection - Wikipedia

    en.wikipedia.org/wiki/Write_protection

    Secure Digital (SD) cards have a write-protect tab on the left side. Extensively, media that, by means of design, can't operate outside from this mode: CD-R, DVD-R, Vinyl records, etc. These mechanisms are intended to prevent only accidental data loss or attacks by computer viruses.

  3. EROFS - Wikipedia

    en.wikipedia.org/wiki/EROFS

    EROFS aims to form a generic read-only file system solution for various read-only use cases (embedded devices, containers and more) instead of just focusing on storage space saving without considering any side effects of runtime performance.

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [23]

  5. Write once read many - Wikipedia

    en.wikipedia.org/wiki/Write_once_read_many

    The most common form, only available when using a full-size SD card, provides a physical write protection switch which allows the user to advise the host card reader to disallow write access. This does not protect the data on the card if the card reader hardware is not built to respect the write protection switch. [2]

  6. Replay Protected Memory Block - Wikipedia

    en.wikipedia.org/wiki/Replay_Protected_Memory_Block

    A Replay Protected Memory Block (RPMB) is provided as a means for a system to store data to the specific memory area in an authenticated and replay protected manner and can only be read and written via successfully authenticated read and write accesses. The data may be overwritten by the host but can never be erased.

  7. Microsoft Office password protection - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_password...

    As the file format is a group of XML files within a ZIP; unzipping, editing, and replacing the workbook.xml file (and/or the individual worksheet XML files) with identical copies in which the unknown key and salt are replaced with a known pair or removed altogether allows the sheets to be edited. [citation needed]

  8. Forensic disk controller - Wikipedia

    en.wikipedia.org/wiki/Forensic_disk_controller

    Additionally, the NTFS file system may attempt to commit or rollback unfinished transactions, and/or change flags on the volume to mark it as "in use". At the worst, undesired files may allocate and overwrite deleted space on the hard disk which may potentially destroy evidence in the form of previously deleted files.

  9. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    The read permission grants the ability to read a file. When set for a directory, this permission grants the ability to read the names of files in the directory, but not to find out any further information about them such as contents, file type, size, ownership, permissions. The write permission grants the ability to modify a file. When set for ...