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VMS Help ANALYZE, /MEDIA, Qualifiers, /BAD_BLOCKS *Conan The Librarian |
/BAD_BLOCKS[=LIST]
Adds the specified bad blocks to the detected bad block file
(DBBF). If the /BAD_BLOCK qualifier is specified along with the
/EXERCISE qualifier, the medium is tested once the bad blocks are
added to the DBBF.
If you do not specify a value for the /BAD_BLOCK qualifier, you are
prompted as follows:
BAD_BLOCKS =
In prompt mode, BAD reports any duplicate bad blocks.
Qualifier Value
List
Specifies the bad block locations to be added to the DBBF. Valid
codes for specifying bad block locations are:
Code Meaning
LBN Specifies the logical block number (LBN)
of a single bad block.
LBN:count Specifies a range of contiguous bad blocks
starting at the logical block number (LBN)
and continuing for "count" blocks.
SEC.TRK.CYL Specifies the physical disk address (sector,
track, and cylinder) of a single bad
sector. This code is valid only for last
track devices.
SEC.TRK.CYL:count Specifies a range of bad sectors starting
at the specified physical disk address
(sector, track, and cylinder) and
continuing for "count" sectors. This code
is valid only for last track devices.
You can specify these formats in any
integer combination or radix combination.
Note
The term "block" denotes a standard unit of 512
bytes, whereas the term "sector" denotes the
physical size of the device sector, which is not
always the same for all devices. For example, an
RL02 has a sector size of 256 bytes, while an RK07
has a standard sector size of 512 bytes.
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