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I have both windows and ubuntu installed in my computer, and I wants to extend my ubuntu root space, but I have some complicated problems, here is the image: My boot location

as you can see, my boot is installed with my windows boot. On the other hand, my ubuntu is installed in another disk, and is shown here:

my ubuntu location

I'm a new to linux, Since it is not LVM, I think I should resize my root by Gparted liveCD, deleting dev/sdb3 and resize root to include unallocated space, but:

1) I don't know whether deleting /dev/sdb3/ with label "boot, esp" will cause any problem?

2) Since bootloader is in other disk, will I lose bootloader?

3) I have checked the existing post in askubuntu, and in here
Why I'm seeing a lock besides the partition I'm trying to modify with gparted? it said that resizing disk space in gparted is enough and just reboot, but in some other post, e.g Extend root partition with unallocated space on the left, it is required to rebuild bootloader by myself, which one is correct??

bummi
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yukun
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    You can't expand your root partition while you're on it safely unless you're using LVM, and you don't appear to be doing that here. Boot to a LiveUSB and then resize. – Thomas Ward Nov 20 '18 at 20:47
  • @ThomasWard Thanks for your comment, I know I have to boot to liveCD to resize, but I don't know whether it is too complex, my bootloader is in different disk and some post mention bootloader would lose after that link, and some others just say resize and applylink. – yukun Nov 20 '18 at 20:57

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