doesn't recognize Windows 8.1 installation, shows disk as empty

[Timo Aaltonen]

I realize parted is a few releases behind, maybe upstream has this fixed already? Basically, the disk is shown as empty, running parted manually it complains that it doesn't have a valid fake msdos partition table. Partman log attached.

[Timo Aaltonen (tjaalton)]

trusty installer, not the current daily but from a week or two ago

[Phillip Susi (psusi)]

What exactly does parted -l and fdisk -l show?

[Timo Aaltonen (tjaalton)]

Looks like I messed up the GPT with parted, but this shows what it asked the first time. fdisk output was the same all along

[Timo Aaltonen (tjaalton)]

right, it doesn't boot anymore....

[Phillip Susi (psusi)]

Please run the following command and attach the file:

sudo dd if=/dev/sda count=34 | gzip -c > partition-table.gz

[Timo Aaltonen (tjaalton)]

here you go

[Phillip Susi (psusi)]

It appears to have a protective mbr to me, but the partition table is just empty, so it looks like you somehow deleted your partitions.

[Timo Aaltonen (tjaalton)]

yes, as I said, parted deleted it for me..

[Launchpad Janitor (janitor)]

[Expired for parted (Ubuntu) because there has been no activity for 60 days.]

[Timo Aaltonen (tjaalton)]

reopening, got another win8 installation to test on

[Phillip Susi (psusi)]

That partition table looks just fine to me?

Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
 1 1049kB 316MB 315MB Basic data partition hidden, diag
 2 316MB 420MB 105MB EFI system partition boot
 3 420MB 555MB 134MB Microsoft reserved partition msftres
 4 555MB 170GB 169GB Basic data partition msftdata
 5 170GB 180GB 10.5GB Basic data partition hidden, diag

[Timo Aaltonen (tjaalton)]

Yes, it does. The installer (utopic, trysty) still says there is no OS and offers to wipe the machine which is not a cool option to do..

[Phillip Susi (psusi)]

If you choose "something else" does it see the partitions correctly?

[Timo Aaltonen (tjaalton)]

hmm yes it does

[Timo Aaltonen (tjaalton)]

So if the bug isn't in parted where is it? It's still the same on utopic.

[Phillip Susi (psusi)]

I think partman-auto is the component responsible for deciding that you have an existing windows install and offering the side-by-side option.