1. Disk drives

2. Hard drives Geometry: heads, tracks (sectors) and cylindercylinder Physical construction: an exampleexample Detailed description Detailed Disk capacity: INT13: ROM BIOS uses INT13 to boot from drive originally 1024 cylinders, 16 heads, 63 sectors, 512 bytes => 528 MB barrier Large or ECHS: heads x 2 and cylinders / 2 LBA: assume that the BIOS will do it today increased to 256 heads (1024x256x63x512) => 8.4 GB barrier Extended INT13 and 64-bit LBA present limit 144 Pentabytes (million gigabytes) Speed: tens of milliseconds with Ultra DMA up to 133 MBs

3. Hard-drives Interfaces ATA(1-3): IDE and EIDEIDE and EIDE ATA(4-7):Ultra DMA (33,66,100, 133MBs)Ultra DMA SCSI IDE vs. SCSI SATASATA: Serial ATA (300MBs and more) USB and FireWire Installing hard-drives

4. Partitioning, formatting Partitions vs. drives For Windows: boot from CD-ROM and setup will do it using Disk manager later on repartition without changing data/programs (before Windows 7): Partition Magic or Partition Commander.Partition MagicPartition Commander resizing partitions in Windows 7: disk managerdisk manager High level formatting: FAT, FAT32, NTFS 4, NTFS 5 (2k,XP, 7)

5. Disk drive performance Fragmentation : overview and defragmentation software (video for command prompt in Windows 7). overviewvideo Compression: overview and file, folder and drives compression in Windows. overview compression Cache: overview and hardware vs. software overview Swap file (paging file): overview and changing its size in Windows 7. overviewWindows 7