no loop module - alternate-amd64.iso current precise

[oldfred]

Trying to loop mount the alternative installer:

Jan 11 17:53:41 iso-scan: devices found: '/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sdb1 /dev/sdc1 /dev/sdc2 /dev/sdc5 /dev/sdc6 /dev/sda /dev/sdb /dev/sdc'
Jan 11 17:53:44 iso-scan: selected_device(s)='/dev/sdb1'
Jan 11 17:53:45 iso-scan: Mounted /dev/sdb1 for first pass
Jan 11 17:53:45 iso-scan: Found ISO ./ubuntu-12.04-alternate-amd64.iso on /dev/sdb1
Jan 11 17:53:45 kernel: [ 182.795977] ISO 9660 Extensions: Microsoft Joliet Level 3
Jan 11 17:53:45 kernel: [ 182.804792] ISO 9660 Extensions: RRIP_1991A
Jan 11 17:53:45 iso-scan: Detected ISO with 'precise' (precise) distribution
Jan 11 17:53:45 iso-scan: Detected ISO with distribution 'precise' (precise)
Jan 11 17:53:45 iso-scan: Ubuntu ISO ./ubuntu-12.04-alternate-amd64.iso usable
Jan 11 17:53:45 main-menu[343]: (process:12213): FATAL: Module loop not found.
Jan 11 17:53:45 main-menu[343]: WARNING **: Configuring 'iso-scan' failed with error code 1
Jan 11 17:53:45 main-menu[343]: WARNING **: Menu item 'iso-scan' failed.

Many of us use grub2 to loopmount ISO files to install either from another drive or flash drive. With flash drives now lower in cost for larger capacities, I usually install several versions in one flash drive and use grub2 to loop mount the ISO files.

[Erick Brunzell (lbsolost)]

Gert Hulselmans has requested "/lib/modules/3.2.0-8-generic/kernel/drivers/block/loop.ko" from an installed Ubuntu precise amd64, but I'm having trouble successfully completing an amd64 install both with 20120111 and alpha1 live images. I PM'ed Gert about that but need a place to throw a screenshot for his info, so here it is.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[AndreiF (andfom)]

This is actual for i386 and amd64 distribution using hd-media initrd. Bag is in hd-media initrd. First of all, if there are more than 10 images, after iso-scan 10 of them assigned to /dev/loop0-9.

The other mistake is "modprobe loop" in /var/lib/dpkg/info/iso-scan.postinst. This not need for using kernel, this feature is compiled in kernel. If I open with Alt+F2 the first console, the partition I need already mounted in /hd-media. So the command "mount /hd-media/dir/ubuntu-server.iso /cdrom -t iso9660 -o loop" work good. But script /var/lib/dpkg/info/iso-scan.postinst exit with code 1, and don't ask me, what iso it would select and mount.

[SUMIT CHOWDHURY (sumit-chowdhury)]

Any workrounds till a permanent fix is available?

[SUMIT CHOWDHURY (sumit-chowdhury)]

I got around the problem by using initrd and vmlinuz extracted from the iso, booting off it and then finally during the installation process manually mounting the iso to /dev/cdrom. Finally I was able to installed ubuntu 12.04 LTS!

[Thomas Joebstl (thomas-joebstl)]

Got the same problem with 11.10 and 12.10 (only tried i386).
Got around by replacing /var/lib/dpkg/info/iso-scan.* in 12.04's initrd.gz with both files from 10.04's initrd.gz

[Gray (gray-green)]

I've got the same with 14.04 amd64.
I used hd-media boot.img with Easy2Boot USB hdd. There is a lot of images on (more than 10) disk, but installer fails to scan them. If I open console with Alt+F2, the partition with images already mounted in /hd-media like as AndreiF wrote. Mounting image to /cdrom doesn't help - installer tryes scan images again and all repeates.