Installation manual

1.3GB IPI Disk Drive
Physical and Logical Geometry
The 1.3GB IPI Disk Drive uses Zone Bit Recording (ZBR). The outer tracks have a higher bit density
than the inner tracks.
The defect list for the 1.3GB IPI Disk Drive is in physical block number. Errors reported under the
operating system format utility are in logical block number. Block numbers converted to
cylinder/head/sector by the show command, are in logical block number.
The analyze command performs the conversion from logical to physical block when a defect is
detected.
The repair command does not perform the conversion from a logical block number to a physical
block number. Do not enter the logical block when using the repair command.
To add a defect to the defect list, first convert the logical block number to a physical block number.
Then, use the add command to enter the physical block number into the defect list. Do not enter the
logical block number when using the add command.
Use the Disk Drive Logical Geometry chart to find Zone, First Block in Zone, First Cylinder in Zone,
Cylinder Size of Zone, and Track Size of Zone.
Example: error reported on block 1000000.
LBN = 1000000
Zone = 2
First Block in Zone 2 = 929526
First Cylinder in Zone 2 = 701
Cylinder Size of Zone 2 = 1292
Track Size of Zone 2 = 76
1.3GB IPI Disk Drive Logical Geometry
ZONE
FIRST
CYL
LAST
CYL
FIRST
BLOCK
FIRST
C/H/S
LAST
BLOCK
LAST
C/H/S
TRK
SIZE
CYL
SIZE
0 0 625 0 0/0/0 830075 625/16/77 78 1326
1 626 700 830076 626/0/0 929525 700/16/77 78 1326
2 701 800 929526 701/0/0 1058725 798/7/31 76 1292
3 801 925 1058726 798/7/32 1215975 917/0/33 74 1258
4 926 1050 1215976 917/0/34 1368975 1032/6/75 72 1224
5 1051 1175 1368976 1032/6/76 1521975 1147/13/39 72 1224
6 1176 1300 1521976 1147/13/40 1670725 1259/16/43 70 1190
7 1301 1400 1670726 1259/16/44 1786325 1347/2/47 68 1156
8 1401 1500 1786326 1347/2/48 1898525 1431/13/5 66 1122
9 1501 1600 1898526 1431/13/6 2007325 1513/13/73 64 1088
Sun4/II: Trouble - Disk - 1.3GB IPI Disk Drive
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