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64- and 48-bit LBAs
 
SCSI primer:
  • commands called CDBs
  • CDBs come in different sizes
  • 6-byte: 21-bit LBA; 10–12 32-bit; 16–32 64-bit
  • READ CAPACITY (12)” is a 12-byte command
Background: most sd drivers use sdscsi which translates
  • device discovery “online”: READ CAPACITY (10) CDB
  • io “bio”: READ / WRITE (12)
Command transation:
online
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