Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 136

3 Tests and Diagnostics
Subtest 01 Sequential read
This subtest performs a Cyclic Redundancy Check (CRC) that continuously reads
all the tracks (track: 0 to 39/0 to 79) on a floppy disk.
The start track is specified at the start of the FDD test. Refer to 1. in this section.
Subtest 02 Sequential read/write
This subtest continuously writes data pattern B5ADADh to all the tracks (track: 0
to 39/0 to 79) on a floppy disk. The data is then read and compared to the original
data.
Subtest 03 Random address/data
This subtest writes random data to random addresses on all tracks (track: 0 to 39/0
to 79) on a floppy disk. The data is then read and compared to the original data.
Subtest 04 Write specified address
This subtest writes the data specified by an operator to a place pointed by track,
head, and address.
Subtest 05 Read specified address
This subtest reads data from a place pointed by track, head, and address specified
by an operator.
3-24
3.8 Floppy Disk Test
Satellite A20 Maintenance Manual (960-444)