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I need to replace PopOs on my machine with Ubuntu and trying to figure out how to partition the disk. I have 2 physical disk: 0.5T with boot PopOS and 2T with the Windows. There are EFI partition on the 0.5T disk, FAT 4.3 Gb partition and 491 Gb PopOS + Swap partitions. I assume 4.3 Gb FAT is related to windows, but i'm not sure.

When booted with Ubuntu usb, it doesn't detect existing system, so I don't wont to wipe the whole disk. Please suggest what partitions is safe to delete, should I manually updated boot loader on EFI partition for Ubuntu and what would be a proper way to partition

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Zaky
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2 Answers2

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Well, after some research - this post really helped me.

The main point was to start Ubuntu USB with EFI support. That allowed to select existing boot loader partition with Windows. After that deleting the encrypted partition and allocation all free space to ext4 partition where Ubuntu was installed.

Zaky
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During the guided installation choose option "something else" when getting to the partition. You have to manually set up another boot partition by stealing some GB from your partion 3 on the 0.5 TB device upfront.

My personal preferences are: using gparted (usually present on any live USB stick) to prepare things i. e. shrink the partition and make room for another boot partition. I'd recommend 50 GB for each Linux (+1 partition for future use) when sharing data between the Linux's by setting up the fstab correctly.

mgw
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