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ups
n00b
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Joined: 06 Sep 2018
Posts: 12

PostPosted: Sun Sep 23, 2018 3:53 pm    Post subject: efi/boot and second system Reply with quote

I've partitioned disk as gentoo handbook suggested (https://wiki.gentoo.org/wiki/Handbook:AMD64/Full/Installation#Default_partitioning_scheme), and ended-up with the following setup:

Code:
$> parted -l

Model: ATA ST1000LM035-1RK1 (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system     Name     Flags
 1      1049kB  3146kB  2097kB                  grub     boot, esp
 2      3146kB  423MB   419MB   fat32           boot
 3      423MB   8811MB  8389MB  linux-swap(v1)  swap
 4      8811MB  210GB   201GB   ext4            rootfs
 5      210GB   252GB   41,9GB  ext4            ubu
 6      252GB   1000GB  749GB   ext4            storage

The /dev/sda1 is not mounted, /dev/sda2 on /boot, /dev/sda3 is swap, and /dev/sda4 is gentoo system mounted on /. Everything works fine.
Now, I would like to install the second system (ubuntu) on /dev/sda5. The problem is that when I run ubuntu graphical installer (from live-usb) I get a message
Quote:
The attempt to mount a file system with type vfat in SCSI1(0,0,0), partition#1(sda) at/boot/efi failed


The vfat is fat32 so does it mean that /dev/sda1 should be formatted as fat32? But it is only 2 MB, so it cannot be done. How do I correct this to be able to install ubu?


Last edited by ups on Sun Sep 23, 2018 3:56 pm; edited 1 time in total
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Jaglover
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Joined: 29 May 2005
Posts: 7094
Location: Saint Amant, Acadiana

PostPosted: Sun Sep 23, 2018 3:55 pm    Post subject: Reply with quote

Your ESP partition is sda2, the flag is set incorrectly on sda1.
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ups
n00b
n00b


Joined: 06 Sep 2018
Posts: 12

PostPosted: Sun Sep 23, 2018 4:04 pm    Post subject: Reply with quote

Jaglover wrote:
Your ESP partition is sda2, the flag is set incorrectly on sda1.

Thanks for quick replay.
So you mean I need to change this flag? I had to misunderstood something in the handbook. Why does my system works correctly with wrong settings? And if I change this flag to /dev/sda2 do I still need /dev/sda1 at all? It is empty partition without any flags, without filesystem and not mounted anywhere...
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Jaglover
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Joined: 29 May 2005
Posts: 7094
Location: Saint Amant, Acadiana

PostPosted: Sun Sep 23, 2018 4:12 pm    Post subject: Reply with quote

sda1 is Grub partition, Grub needs it to store its code. I don't think it is even needed for EFI boot. It is needed for MBR boot when GPT partition table is used.
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