[rpi2] Ubuntu Core2 install

[130s]

Thought #327 (comment) went well but now I have #330 so something may have gone wrong.

[130s]

Stuck at #330 (comment). So now I'm trying Core again using dd, not ddrescue based on the advice on snapcraft.io

Same step as #327 (comment) for formatting as FAT32.

$ xzcat ubuntu-core-16-pi2.img.xz | sudo dd of=/dev/mmcblk0 bs=32M
[sudo] password for n130s: 
0+56926 records in
0+56926 records out
467571712 bytes (468 MB, 446 MiB) copied, 36.6332 s, 12.8 MB/s
$ sync
$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0 465.8G  0 disk 
├─sda1        8:1    0     1K  0 part 
├─sda2        8:2    0     4G  0 part [SWAP]
└─sda5        8:5    0 461.8G  0 part /
sr0          11:0    1  1024M  0 rom  
mmcblk0     179:0    0  14.4G  0 disk 
└─mmcblk0p1 179:1    0  14.4G  0 part 
$ 

So far so good. Now SD card ejected and will try on RPi2.

[130s]

Same error as #327 (comment) keeps happening on RPi2.

[ 242.936702] mmc0: error -110 whilst initialising SD card

[130s]

Got tired of trieals, then quit using the a few years old SD card, got a branch SD card 32GB.

SD card plugged into RPi2, init process seemed to have gone well without eminent error but at some it got stuck. I remember I was asked something like "Enter to configure" so I entered but then monitor blacked out and nothing happened after that. I also remember ethernet cable was NOT plugged when I was asked about "configure".

Re-stored the SD card. This time ethernet that has internet access is plugged. Seems to be progressing! Now I'm asked "Configure the network ..." on the monitor.

$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0 465.8G  0 disk
├─sda1        8:1    0     1K  0 part
├─sda2        8:2    0     4G  0 part [SWAP]
└─sda5        8:5    0 461.8G  0 part /
sr0          11:0    1  1024M  0 rom
mmcblk0     179:0    0  29.7G  0 disk
├─mmcblk0p1 179:1    0   128M  0 part /media/n130s/system-boot
└─mmcblk0p2 179:2    0  29.6G  0 part /media/n130s/writable
$ umount /media/n130s/system-boot
$ umount /media/n130s/writable
$ sudo fdisk /dev/mmcblk0p
[sudo] password for n130s:
$ sudo fdisk /dev/mmcblk0
[sudo] password for n130s:

Welcome to fdisk (util-linux 2.27.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x68c4443d

Device         Boot  Start      End  Sectors  Size Id Type
/dev/mmcblk0p1 *      2048   264191   262144  128M  c W95 FAT32 (LBA)
/dev/mmcblk0p2      264192 62304687 62040496 29.6G 83 Linux

Command (m for help): d
Partition number (1,2, default 2):

Partition 2 has been deleted.

Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x68c4443d

Device         Boot Start    End Sectors  Size Id Type
/dev/mmcblk0p1 *     2048 264191  262144  128M  c W95 FAT32 (LBA)

Command (m for help): d
Selected partition 1
Partition 1 has been deleted.

Command (m for help): ^R
n
Partition type
   p   primary (0 primary, 0 extended, 4 free)
      e   extended (container for logical partitions)
      Select (default p):

Using default response p.
Partition number (1-4, default 1):
First sector (2048-62333951, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-62333951, default 62333951):

Created a new partition 1 of type 'Linux' and of size 29.7 GiB.

Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x68c4443d

Device         Boot Start      End  Sectors  Size Id Type
/dev/mmcblk0p1       2048 62333951 62331904 29.7G 83 Linux

Command (m for help): t
Selected partition 1
Partition type (type L to list all types): b
Changed type of partition 'Linux' to 'W95 FAT32'.

Command (m for help): p
Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x68c4443d

Device         Boot Start      End  Sectors  Size Id Type
/dev/mmcblk0p1       2048 62333951 62331904 29.7G  b W95 FAT32

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

$ sync
$ sudo mkfs.vfat /dev/mmcblk0
mkfs.fat 3.0.28 (2015-05-16)
$ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0 465.8G  0 disk
├─sda1        8:1    0     1K  0 part
├─sda2        8:2    0     4G  0 part [SWAP]
└─sda5        8:5    0 461.8G  0 part /
sr0          11:0    1  1024M  0 rom
mmcblk0     179:0    0  29.7G  0 disk
└─mmcblk0p1 179:1    0  29.7G  0 part
$ umount /dev/mmcblk0
umount: /dev/mmcblk0: not mounted
$ xzcat ubuntu-core-16-pi2.img.xz | sudo dd of=/dev/mmcblk0 bs=32M
0+56928 records in
0+56928 records out
467571712 bytes (468 MB, 446 MiB) copied, 2.23204 s, 209 MB/s
$ sync
$ lsblk
NAME    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda       8:0    0 465.8G  0 disk
├─sda1    8:1    0     1K  0 part
├─sda2    8:2    0     4G  0 part [SWAP]
└─sda5    8:5    0 461.8G  0 part /
sr0      11:0    1  1024M  0 rom
mmcblk0 179:0    0  29.7G  0 disk /media/n130s/5BF0-DB29
$ umount /media/n130s/5BF0-DB29
$

[130s]

The package originally got stuck at installation #330 (comment) seems to have been installed. So for now I ignore the old SD card and close this.