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I'm doing a clean re install of Ubuntu 20.04 LTS my previous install had been created with LVM which I want to avoid as it cost me tons of lost data before.

starting situation
Disk1 = SSD 120GB
Disk2 = 2 TB HDD

wanted situation :
Disk1 : /swap disk 16 GB
/ : root (bootable) with Ubuntu system
/ application software + config files
/ downloads application software
Disk2 : /home(?)
/ application data
/ user data files
/swap disk 16 GB

How do I use the partitioning

Derek Giroulle
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  • from other articles I figured out that the swap should be on the HDD – Derek Giroulle Oct 19 '20 at 11:09
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    Read Is it necessary to have a /home and /swap partitions in 20.04. – schrodingerscatcuriosity Oct 19 '20 at 11:20
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    From the looks of this proposed partition scheme, I suspect whatever problems you've blamed on LVM are misdirected, because this kind of overpartitioning is a mess... I suggest keeping everything on one partition unless you have a very good reason to keep /home separate. And /home is the only one I would even consider putting on another partition. Put your root file system on the drive with the faster R/W and use the second disk to store data (pics, docs, music, video) – Nmath Oct 19 '20 at 11:33
  • My system would be ~500MB EFI as Fat32, /root about 40+GBs as ext4 on SSD and /home on HDD as ext4. Keep it simple. Have a good backup system in place for when things happen. Can also just have /root on SSD and use HDD for backups, if you do not think you will have a lot of data. – crip659 Oct 19 '20 at 11:52
  • @Nmath re my remarks about LVM : please don't draw nay conclusions about my LVM remarks from my proposed setup, , FYI my reluctance on LVM was double HD non raid system, where the second -disk which imho was still empty- had a hickup and all data on all disks was in accessible. LVM config adds a layer that make the data fysically unreachable and unreadable

    I have no confidence in LVM i want my data fysically readable when i connect my drive through a SATA interface or through a SATA-USB interface

     – Derek Giroulle Oct 19 '20 at 12:58
  • @schrodigerscatcuriosity if I understand correctly from the linked article
    a- FROM 18.04 LTS onward - I can ditch the swap partition because it creates a swapfile on the / partition
    b- if I put the /home partition on the HDD, any other application software is also stored / installed on the HDD, not only data that raises other questions : how about VMware of Virtualbox how can
    b-     – Derek Giroulle Oct 19 '20 at 13:12
  • Would i be an alternative de create the follwing directory structure
    Disk 1 SSD : / root (bootable) with ubuntu system software /home with application software and application data Disk 2 HDD / data with user data files     – Derek Giroulle Oct 19 '20 at 13:19
  • @DerekGiroulle a) that's right b) I'm not sure I understand: /home partition is for storing your personal data, applications won't install there. The applications will install in disk 1 where the root system will be installed (/). – schrodingerscatcuriosity Oct 19 '20 at 13:22
  • You should put /home on your SSD. That's where a lot of configs are stored that are often referenced during startup and application launches. Your system performance will suffer as a result of putting your home directory on a slower drive. Especially random read speed which is dramatically worse on HDDs and the type that matters most in these cases. No idea what you're on about with LVM - but it seems irrelevant here – Nmath Oct 19 '20 at 13:25
  • @DerekGiroulle Do not try to complicate partitions, just leads to headaches. Use the KISS system. Just need an EFI and /root partition, if a lot of data add /home to HDD. – crip659 Oct 19 '20 at 13:26
  • And don't try to move applications. Leave them where they are installed. Many won't work if you relocate them... – Nmath Oct 19 '20 at 13:26
  • Summarising the advice :
    -- Disk 1 SSD : / root (bootable) with ubuntu system software
    /home with application software and application data
    no /swap partition unless i want to hibernate --- Disk 2 HDD /data with user data files

    that would also be a setup useful for a laptop with an internal SSD and an external (USB) HDD with data that could move between different laptops with an equivalent setup

    Thanks for the advice

     – Derek Giroulle Oct 19 '20 at 13:42
  • This last setup works for me – Derek Giroulle Oct 20 '20 at 13:16

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