Difference between revisions of "Osx"

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* Hold down apple + "v" on boot for verbose mode
 
* Hold down apple + "v" on boot for verbose mode
 
* Command + Control + Power also brings one into single user mode
 
* Command + Control + Power also brings one into single user mode
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== dynamic_paging ==
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I noticed on my MacBook Air that after a few weeks I would run out of diskspace, without downloading anything, forcing me to reboot. Before I did, I checked /tmp and nothing looked large enough. Bryan F from [yh] pointed out "man dynamic_pager"
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$ ls -la /private/var/vm/swapfile
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$ sysctl vm.swapusage
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I noticed gigs worth of files! At your own risk:
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$ sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist
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and reboot. After reboot, sysctl vm.swapusage shows 0 and /private/var/vm/swapfile is empty. replace "unload" with "load" above to revert to default.

Revision as of 23:06, 20 August 2012

Shortcuts

  • Hold down "d" on boot to do a hardware test
  • Hold down alt/option on boot to boot into safe mode
  • Hold down apple + "s" on boot for single user mode
  • Hold down apple + "v" on boot for verbose mode
  • Command + Control + Power also brings one into single user mode

dynamic_paging

I noticed on my MacBook Air that after a few weeks I would run out of diskspace, without downloading anything, forcing me to reboot. Before I did, I checked /tmp and nothing looked large enough. Bryan F from [yh] pointed out "man dynamic_pager"

$ ls -la /private/var/vm/swapfile
$ sysctl vm.swapusage

I noticed gigs worth of files! At your own risk:

$ sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist

and reboot. After reboot, sysctl vm.swapusage shows 0 and /private/var/vm/swapfile is empty. replace "unload" with "load" above to revert to default.