I had previously installed windows 8.1 on my hard drive, then I later unallocated some space like 15GB and installed linuxmint separately on that partition, How to extend the 15GB volume that I have allocated for linuxmint without any loss of data?


  • Do you have any unallocated space left now on the disk? – Samir Apr 22 '15 at 10:40
  • 1. you need to create some free space (make windows partition smaller) 2. You need to download live ISO of GParted, burn it and boot from it. 3. Extend the Mint partition. 4. Boot mint. 5. Check this tutorial on commands that will allow you to extend the linux partition table so that Mint will see the newly added free space: howtoforge.com/linux_resizing_ext3_partitions. Note: GParted worked perfectly every time for me. – mnmnc Apr 22 '15 at 10:42
  • Which one is Windows on? The sda1? You have 18 GB on sda6. Can you take some of that? – Samir Apr 22 '15 at 10:46
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    Is it OK if I post your screenshot here on SU? – Samir Apr 22 '15 at 10:47
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    Since data preservation is one of the objectives here, I would strongly recommend that you backup any important files to an external disk. – Samir Apr 22 '15 at 11:23

To assume you have enough space of the win 8.1 install:

1) boot into (or use a install cd) for windows and shrink its partition to the desired extension size then boot into a mint install cd/usb


2) mount and "chroot" the mint install (which has both fdisk / gparted -- for newer users gparted is hands down safer option --its also gui based.

3) then extend the 15Gb mint install by the newly re-un-allocated space and click apply.

4) then from mint installer -- open a terminal (Clt-Alt-F2 by default) and run:

sudo update-initramfs -u -k all && sudo update-grub

(FOR THIS ENSURE YOU ARE IN THE "CHROOT" --change(d) root) -- can confirm by running lsblk (which should NOT show /mnt/...... only native /, /home,etc etc.

5) exit the "chroot" via Clt_d or typing exit TWICE)

6) reboot --removing install media prior to restart

7) enjoy newly enlarged mint install on your dual booted system.

  • To shrink a partition should I use an install disk or can I just shrink it with Windows installed on my pc? – CrossBones Apr 22 '15 at 11:01
  • To take some space from your Windows partition, you should be able to do that inside Windows. You can use Disk Management for this. – Samir Apr 22 '15 at 11:22
  • @sammyg -- possible sure BUT you seem to be missing the data loss avoidance that method is not likely to not muck things up (use another system aka live/install media and mess with the UN MOUNTED partitions – linuxdev2013 Apr 22 '15 at 12:30

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