bad block

Thesaurus

Noun

1.

bad block - (computer science) a block (usually one sector) that cannot reliably hold datacomputer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structuresblock - (computer science) a sector or group of sectors that function as the smallest data unit permitted; "since blocks are often defined as a single sector, the terms `block' and `sector' are sometimes used interchangeably"