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I want to reinstall new Ubuntu because old corrupted. I have on this disk Windows so I m afraid that because this message Windowse erased. How to know during installation where it is windows on which disk sda? The following partitions are going to be formatted: Partition #9 of SCS1 (0,0,0) sda as ext4 Partition #10 of SCS1 (0,0,0) sda as swap

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The system is indicating that it will remove partitions /dev/sda9, which is an ext4 partition and /dev/sda10, which is a swap partition.

Neither of those is a Windows Partitions.

You can run this command to see which partition has your Windows.

$ sudo fdisk -l

Windows is an ntfs partition.

This is an extract of the sudo fdisk -l from a computer in my shop:

$ sudo fdisk -l
[sudo] password for apollo: 
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: D4900414-D1A2-4FC2-8DDD-3A93A9A57083

Device          Start        End    Sectors   Size Type
/dev/sda1        2048     739327     737280   360M EFI System
/dev/sda2      739328    1001471     262144   128M Microsoft reserved
/dev/sda3     1001472  785969987  784968516 374.3G Microsoft basic data
/dev/sda4  1924679680 1926369279    1689600   825M Windows recovery environment
/dev/sda5  1926369280 1953523711   27154432    13G Microsoft basic data
/dev/sda6   785971200 1899800575 1113829376 531.1G Linux filesystem
/dev/sda7  1899800576 1924679679   24879104  11.9G Linux swap

The Windows partition is /dev/sda3

L. D. James
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