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I am using ubuntu 19.04. I want to delete fully and install fresh Ubuntu 18.04. And also I don't want to keep any information ,data inside it. When I searched in internet for the Installation type that is partitioning part, I became fully confused. Can you kindly tell me how should I partition hard disk. Swap partition, home partition, ext4 partition in details. Remember I don't want to keep neither 19.04 version neither any data in my laptop. Thanks in advance.

Sukumar Jana
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2 Answers2

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Default Ubuntu installation options are pretty much all you need.

Reinstall, and on the "Installation type" step choose:

"Erase disk and install Ubuntu"

I used this default installation method on my 120GB (111.76GiB) SSD and the following partitions were created:

$ sudo parted -l

Model: ATA Samsung SSD 850 (scsi)
Disk /dev/sda: 120GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End    Size   File system  Name                  Flags
 1      1049kB  538MB  537MB  fat32        EFI System Partition  boot, esp
 2      538MB   112GB  111GB  ext4

Where:
1. Boot/EFI partition (fat32)
2. Root (/) partition (ext4) (for everything else)

Note: From Ubuntu 18.04 a swap file rather than a swap partition is used.

With 8GB of memory, the default installation created the following swap file:

$ cat /proc/swaps

Filename                Type        Size    Used    Priority
/swapfile               file        2097148 308     -2

https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop#5

Broadsworde
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Unless you have a specific use for Ubuntu, it's pretty safe to just go and use the automatic partitioner with or without LVM (without LVM = easier to restore data).

Stefano Martins
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