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Check if you partition are aligned

Terminal - Check if you partition are aligned
fdisk -l /dev/sda | grep -E sda[0-9]+ | sed s/*// | awk '{printf ("%s %f ",$1,$2/512); if($2%512){ print "BAD" }else {print "Good"} }' | column -t
2012-05-18 08:34:36
Functions: awk column fdisk grep sed
1
Check if you partition are aligned

To get most of you HDD/SSD driver you need to make sure you partition are aligned, if not the speed penalty can be up to 50% slower!

this simple one liner will check to see if each partition start sector is divided by 512

you need to change sda with your driver

if you find the one of your partitions is not aligned use gparted to move the start sector of the partition to be divided of 512

Alternatives

There are 4 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

in order for this to work in centos/opensuse/rhel, i needed to use fdisk -lu

Comment by emjaydee 76 weeks ago

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