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13 Cards in this Set
- Front
- Back
what does this mean? *on test |
CAN'T FIND THE STARTUP DISK what can cause? 1. Hardware Issues - Drive, PRAM |
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What does this mean? |
CAN'T FIND OR LOAD KERNEL What can cause? Likely a file system issue |
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CARD 2 |
issues affect boot, mounting external drives, programs/session crashes, data loss - depends on what data is corrupted ie: Partition tables, Bootloader,ProTools executable, ProTools sessions - file issues |
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DATA CORRUPTION: |
Logical Error: data written incorrectly to medium due to faulty RAM, interruptions, program bug Surface Errors(Physical): 'Bad Sectors' cause the medium to be unable to store data correctly |
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File System Repair Programs: don't typically fix files - just file systems |
MacOS: Disk Utility > First Aid (shitty) option -make sure Storage Device is selected to verify/repair Partition Table Structures -Select Volume/Partition to repair file system structures - catalog tree, bitmap -can only Fix Logical Errors Windows: CHK DSK > windows key + X > Cmd Prompt (admin) Basic Syntax: chkdsk c: /f /r (be aware of spaces) |
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Repairing System Disk often OS drive's file system can't be repaired while OS is fully functional
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Running First Aid: 1. Within OS 2. From Recovery HD 3. From Internet Recovery 4. Using Safe Mode |
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Recovery HD |
-a 'hidden' partition on internal hard drives that provides repair/re-install options *Command + R @ boot Recovery HD's are typically created during OS install |
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Internet Recovery |
-In case Recovery is not available *Cmd + Opt + R @ boot (or if Recovery HD fails) -runs slower but will run! |
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Safe Mode |
Hold Shift @ boot Runs First Aid and starts macOS with minimum of KEXTS - kernel extensions (drivers) |
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Cautions: when fixing file systems |
-use appropriate repair programs -be careful when APFS comes out *don't use older repairs with newer OS APFS - apple file system - new - let others be the guinea pigs - might not have First Aid |
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Verbose Mode |
-for visual troubleshooting of boot/shutdown procedure -good for hangs/freezing -wait for it to finish and then google |
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DISK WARRIOR by Allsoft ($100) |
-3rd party Macintosh Repair Software -run from USB key - use the right version HFS+ 1. Find Drive 2. Rebuild it 3. Will tell you if it can't?? Brilliant - uncanny ability to find missing drives! |
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Fixing Surface Errors on MAC |
(Tech Tool Can) In Disk Utility -Choose Erase -Security Options - single or multiple zero-ing This ERASES EVERYTHING!!!! |
