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leviwilson/memory_backed_disk.md

Created December 5, 2013 01:58
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Create memory backed disk on OSX
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memory_backed_disk.md

Create a memory-backed disk in OSX. Useful for sending git filter-branch to it to speed things up.

# to mount
hdiutil attach -nomount ram://$(( 128 * 1024 * 2 )) # returns device with 128 MB (in 512k blocks)
diskutil erasevolume JHFS+ "tmp" /dev/disk1 # whatever the hdiutil command returns

# when done
diskutil unmount /dev/disk1
hdiutil detach /dev/disk1
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