Arch Linux

Tadhg

Member

From: Éire

Registered: 2023-01-19

Posts: 17

Fdisk not allowing me to have a partition of more than 35GB

I'm reinstalling Arch after a year or so on my desktop and I'm having this weird issue where when I try to create a partition with fdisk or cfdisk I'm unable to create a partition above a certain size. I don't even know what could be going on here as I have never seen anything like this.

Furthermore, even if I were to accept this and write it to my SSD, it still doesn't even show the partitions on lsblk. It just shows the base partition without any sub partitions that were (supposedly) made by fdisk.

Last edited by Tadhg (2025-06-06 19:42:06)

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Is fuath liom fuinneoga

frostschutz

Member

Registered: 2013-11-15

Posts: 1,548

Re: Fdisk not allowing me to have a partition of more than 35GB

Most likely you want gpt instead of disklabel type: sun.

Tadhg

Member

From: Éire

Registered: 2023-01-19

Posts: 17

Re: Fdisk not allowing me to have a partition of more than 35GB

Most likely you want gpt instead of disklabel type: sun.

hm I didnt notice that. I dont know why it's setting it as sun disklabel as it's always been gpt until now. I'll look up how to change it and see if that works

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Is fuath liom fuinneoga

frostschutz

Member

Registered: 2013-11-15

Posts: 1,548

Re: Fdisk not allowing me to have a partition of more than 35GB

(m for help) should list it. Otherwise 'mklabel gpt' in parted.

Tadhg

Member

From: Éire

Registered: 2023-01-19

Posts: 17

Re: Fdisk not allowing me to have a partition of more than 35GB

(m for help) should list it. Otherwise 'mklabel gpt' in parted.

Yup that worked. Thanks! I have absolutely 0 idea why my SSD decided to swap to sun disklabel but thanks for the help lol.

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Is fuath liom fuinneoga

frostschutz

Member

Registered: 2013-11-15

Posts: 1,548

Re: Fdisk not allowing me to have a partition of more than 35GB

Sometimes its enough to write a bit of random data. old formats did not have much in the way of reliable header signatures / magic bytes.