Test harddisk for bad blocks: Difference between revisions
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-n Use non-destructive read-write mode.<br> | -n Use non-destructive read-write mode.<br> | ||
By default only a non-destructive read-only test is done. This option must not be combined with the -w option, as they are mutually exclusive. | By default only a non-destructive read-only test is done. This option must not be combined with the -w option, as they are mutually exclusive. | ||
Pass completed, X bad blocks found (R/W/C errors) | |||
The three numbers in the parentheses correspond to: | |||
*Read errors: Errors encountered while reading from the disk. | |||
*Write errors: Errors encountered while writing to the disk. | |||
*Corruption (Compare) errors: Errors where the data read back from the disk does not match what was written (i.e., data corruption detected during verification) | |||
# smartctl -t long /dev/device | # smartctl -t long /dev/device | ||
remember no smart on sd cards | remember no smart on sd cards | ||
Latest revision as of 08:24, 14 May 2025
# badblocks -e 10 -s -w /dev/mmcblk0
-e max bad block count
Specify a maximum number of bad blocks before aborting the test. The default is 0, meaning the test will continue until the end of the test range is reached.
-s show progress
-w use write mode
-n Use non-destructive read-write mode.
By default only a non-destructive read-only test is done. This option must not be combined with the -w option, as they are mutually exclusive.
Pass completed, X bad blocks found (R/W/C errors)
The three numbers in the parentheses correspond to:
- Read errors: Errors encountered while reading from the disk.
- Write errors: Errors encountered while writing to the disk.
- Corruption (Compare) errors: Errors where the data read back from the disk does not match what was written (i.e., data corruption detected during verification)
# smartctl -t long /dev/device
remember no smart on sd cards