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It's quite possible for these corrupt files to end up being put into the next backup. Remember that any such process involves moving data around on the hard drive surface, and any minor blip (bug in the software, power surge, etc.) during these operations could result in data corruption, or even a non-functioning system.Įven with a comprehensive backup system, minor data corruption might not be noticed for some time - perhaps even months or years later (it could be an archived document, or some photos that are rarely looked at, but may have personal value). However, I'd also be wary of overdoing it too. It has been mentioned in the past that defragmenting an Aperture Library can be helpful to performance there. Pretty much the same outcome.Īs a rule, it makes little difference to the main system drive, although as mentioned heavy fragmentation can occur. But most of us would more likely back it all up and wipe it and then replace just what we wanted.
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In that case it might be wise, and certainly couldn't hurt.
#How to defrag a macbook pro yosemite full
OTOH, in this case, if the OP is going through a full drive drive and cherry picking out the files they won't want to the trash, this could leave gaps in random areas that, if the drive fills up,Ĭause new large files to need to seek out these smaller spaces.
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I might consider it for a drive handed down with files, but running a defragger on a modern Mac in regular use isn't really necessary, IMO. 05% back in responsiveness in this old dog of a MBP.
#How to defrag a macbook pro yosemite archive
If I've been working a bit on an internal where the space headroom has shrunken too much I might archive a bunch of large files to free up a large chunk and then just copy back in progress files and libraries (which would be then not as fragmented), but that's mostly just to pat myself on the back for being organized and gaining. Probably a good in concept to start with a clean slate every blue moon, but most things really don't fragment and affect performance with modern computers in the way it used to. System changes and files are handled with drive area in mind. Probably doesn't apply to this case, but I've checked large Aperture libraries that did become fairly fragmented, copied them, wiped (and opened more space for the heck of it) and copied back and did detect a very slight improvement.īut, yeah, the defragging that was wise to do periodically with System 7 on the SE is basically a thing of the past.