Table of Contentsbadblocks - search a device for bad blocks badblocks [ -b block-size ] [ -o output_file ] [ -v ] [ -w ] device blocks-count badblocks is used to search for bad blocks on a device (usually a disk partition).
device is the special file corresponding to the device (e.g /dev/hdXX).
blocks-count is the number of blocks on the device. - -b block-size
- Specify the size of blocks in bytes.
- -o output_file
- Write the list of bad blocks to the specified file. Without this option, badblocks displays the list on its standard output.
- -v
- Verbose mode.
- -w
- Use write-mode test. With this option, badblocks scans for bad blocks by writing some patterns (0xaa, 0x55, 0xff, 0x00) on every block of the device, reading every block and comparing the contents.
Never use the `-w' option on an device containing an existing file system. This option erases data! badblocks has been written by Remy Card <card@masi.ibp.fr>, the developer and maintainer of the ext2 fs. I had no chance to make reals tests of this program since I use IDE drives which remap bad blocks. I only made some tests on floppies. badblocks is available for anonymous ftp from ftp.ibp.fr and tsx-11.mit.edu in /pub/linux/packages/ext2fs. e2fsck(8), mke2fs(8)
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