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I have dual boot with Windows 8.1 and ubuntu 16.04 LTS. I want to increase my root (/) partition size.This are my partitions in laptop.

dipak shukla
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    Welcome to AskUbuntu. I'm not sure what you want us to tell you, I'd suggest shrinking the 'dns' partition, then growing your '/' paritition, but I have no idea what is in 'dns' so can't know the consequences. I'd use gparted myself, but lots of tools would do it (your / must be unmounted, easiest with 'live' media such as install media, but it's your choice). The growing of / may cause grub to have issues (if you use it), so the mbr (if you use it; the pointer to where / is on disk) may need re-writing, but I'd only fix this if you have issues with it. – guiverc Jun 24 '18 at 08:01
  • yes ..the 'dns' partition is empty, I want to shrink that and increase '/' partition size. – dipak shukla Jun 24 '18 at 08:58
  • Possible duplicate of https://askubuntu.com/questions/126153/how-to-resize-partitions. If you want to use gparted, you'll find youtube videos telling you how, let alone documentation (eg. https://help.ubuntu.com/community/GParted though you'll want to click the gparted link). You can use your existing Ubuntu to resize or delete 'dns', but it'll be easier to boot a 'live' OS (so / is unmounted; use Ubuntu install media) so / isn't in use to increase it's size. If you boot and grub-rescue is visible, enter commands to boot Ubuntu, or return to 'live' media to correct, covered here too. – guiverc Jun 24 '18 at 12:45

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