diskwarrior 3.0 overview - university of utah · 2020-06-25 · diskwarrior 3.0 overview by scott...
TRANSCRIPT
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DiskWarrior 3.0 OverviewBy
Scott Doenges
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What is DiskWarrior?• Popular directory repair/recovery utility
for Mac OS 9/X.
• Complete rebuild of the app – not a port.
• Comes on a ‘smart’ Mac OS 9/X bootable CD.
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How much does it cost?• $79.95 for new users.• $39.95 for upgrade from earlier version.• Well worth the price...
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What’s new?• Includes manual & automated hardware
diagnostics using SMART, with nice notification options.
••••• No more DiskShield, may be added later.
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• Area of disk used by the OS as a “map” of its contents.• Numbers, names, locations, and sizes of files.• The OS uses the directory when files are added,
modified, or deleted.
What is the Disk Directory?
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• Happens when an app incorrectly updates info in the directory, or doesn’t update it.
• When this bad data is accessed again, it will cause application & OS errors.
What is Directory Damage?
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• Salvages everything possible from the old directory, then rebuilds it from scratch.
• Can recover files you thought were lost.• Also fixes problems with master directory
blocks, volume headers, catalog trees, etc.
How does DiskWarrior fix it?
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• Requires authentication, then launches two root-owned processes– DiskWarriorTool– DiskWarriorRebuildServer
Using DiskWarrior
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• Choose your disk (can’t be the startup disk)
Using DiskWarrior
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• Click “Graph” for an optional graphical representation of your current directory:
Using DiskWarrior
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• Click “Rebuild” to begin the process:
Using DiskWarrior
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• Review changes made to directory:
Using DiskWarrior
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• Use “Preview” feature to compare the old & new directories, and copy files off (if a disk is failing or if you’re missing data):
Using DiskWarrior
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• Click “Replace” and it will swap in the new directory then remount your disk:
Using DiskWarrior
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• Journaling is an optional buffering method in Mac OS X.
• DiskWarrior supports it...but how?• Not sure how it handles disks that are part
of a RAID set.• No response from Alsoft...
Journaling & RAID Support
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• If you used another disk utility first or are missing data, hold down Option and the “Rebuild” button will change to “Scavenge” which searches for missing data:
Using DiskWarrior
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• Process is the same, but Preview feature looks different (i.e. no Finder):
Booting from the CD
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• Manual Diagnostics check:
Hardware Diagnostics
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• Automatic Diagnostics check:
Hardware Diagnostics
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• Automatic Diagnostics Daemon...– DiskWarriorDaemon monitors your drives at
specified intervals.
Hardware Diagnostics
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• By far the most reliable & invaluable disk repair/recovery utility available for Mac.
• Beats the snot out of Norton...
Conclusion...
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Q&A
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Demo...