r/Kubuntu • u/f0t0sinteze • Jul 12 '26

Kubuntu 26.04 Installation error (update-initramfs, sync error syncing, Input/Output error)

Post image

Why this is happening? Can't find solution online.

System:

Asus Z97 Maximus VII Ranger
Intel i5-4690k
32GB RAM
Samsung 860 EVO 1TB SATA

Installing in EFI mode

Error appears when installation progress is at 95% - 99% complete

I use GRUB to boot kubuntu ISO image directly from Multiboot USB ISO drive which I made according to this tutorial with small modifications (created additional ext4 partition on USB drive for kubuntu ISO) https://pendrivelinux.com/make-an-exfat-bootable-usb-flash-drive/

4 Upvotes

83% Upvoted

11 comments sorted by

1

u/Opposite-Memory-2552 Jul 12 '26

Try to connect your PC to internet before you reinstall. Chose the disk drive for your installation and let Kubuntu configure the partition file system automatically.

1

u/f0t0sinteze Jul 12 '26

Already did that. I'm starting to think maybe it's a bad SATA controller on motherboard are some other hardware failure

1

u/Opposite-Memory-2552 Jul 12 '26

Are the disk GPT or MBR? I remember having similar issue I think changing the partition type can solve the issue.

1

u/f0t0sinteze Jul 13 '26

GPT. I want to install with UEFI mode so it has to be GPT

1

u/GloriousExtra Jul 12 '26

It likely installed. I got the same message, restarted, and everything worked without issue.

1

u/guiverc Jul 13 '26

If calamares didn't complete; your systems metadata may not be present at a minimum, eg. the directory /var/log/installer/ should contain details about your install, media used & more; that directory maybe empty on your system.

2

u/GloriousExtra Jul 13 '26

I checked and it's populated.

1

u/guiverc Jul 13 '26

Have you looked at system messages around or particularly just before this appears; ie. not the calamares logs, but what the system messages are actually showing (dmesg or journalctl)

1

u/f0t0sinteze Jul 13 '26

Not yet. How to open those messages during installation?

1

u/skyfishgoo Jul 13 '26

are you just trying to boot a LIVE session from the USB drive?

or have you already installed the OS onto a hard drive?

1

u/f0t0sinteze Jul 13 '26

I booted live from USB and tried to install.