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I currently have Ubuntu 22.04 installed on my Flashdrive with a free license , and I am planning to install Ubuntu 22.04 on my laptop , which currently has Windows 10 installed . My intention is to remove Windows 10 from my hard drive and have Ubuntu as the sole OS. My hard disk is 1 TB with 8GB Ram and it boots through EFI . The Intel CPU is i5-4210U 1.7G . Please bear with me for asking some trivial questions , (since I am a beginner with Linux). My Lenovo has a Windows 10 recovery partition on the hard drive , which would allow me to reinstall Windows 10 , if I change my mind in the future . Therefore I would like to do a custom installation of Ubuntu on my 1 TB hard drive to ensure that the Lenovo recovery partition (for Windows 10 stays intact )

  1. On my hard drive , there are two EFI (ESP) partitions which contain boot information for Windows 10 , along with a Microsoft Reserved Paritition . If I delete the above three partitions , and if in the future I decide to replace Ubuntu with Windows 10 on the hard drive , can the Lenovo recovery disk recreate the above three partitions or will the Lenovo recovery disk work only if the partitions are still left intact on the hard drive ?

  2. When custom installing Ubuntu 22.04 ( using the 'something else' option during installation) , how much space should I allocate for the '/' (root) partition on a 1 TB hard disk for optimal results ? From what I read on the web , the root partition must always be a primary partition .

  3. For the swap partition , for best results , how much space should I allocate for it ? Should it be made as a primary or logical partition for optimal results?

  4. For the /home partition , how much space should I allocate for it ? Should it be made as a logical or primary partition for best results . Thank You very much for answering these questions from a Linux beginner . Yours Sincerely , Dan

Thanks @ guiverc , user535733 , karel and Archisman for taking the time to answer my questions .The primary use of the Ubuntu OS , will be for using LATEX editors like TEXstudio and data analysis using SAS , using SAS -ondemand available online ( which does not require any software download ). I should have also mentioned there are two boot partitions for the following reason: The Fat32 SYS_DRV (hidden) partition is the boot partition for Windows 10 . The Fat32 LRS_ESP partition ( the Lenovo Recovery System ESP partition ) is the partition used for booting from the Lenovo Recovery System and gives a separate boot menu ( giving the option to the user to boot from Windows 10 or from any other device . The neat thing about this is that you can access the EFI boot menu , with all the boot options displayed without entering Window 10 )

Dan I
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1 Answers1

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  1. Whether Windows recovery requires the same partition structure is a Windows specific question. I don't know the answer to that. Contact Lenovo/Microsoft support for more information.

for best results , how much space should I allocate for it ?

It really depends on your needs. There is no optimum configuration that produces "the best results". However, I will present my recommendations below.

  1. From my experience, if you install a lot of programs, you will need at least 60-70 GB for the root partition.

  2. Modern versions of Ubuntu will automatically configure a swapfile during installation. You don't need a swap partition.

  3. You don't necessarily need a separate home partition. Just create a root partition, and Ubuntu will properly configure a home folder within that.

tl;dr Just create a 80 GB EXT4 root partition, and you don't need to configure anything else. You can use the rest of the hard drive as a data partition.

Archisman Panigrahi
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