[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#25233: parted is confused by ISO images, miscalculates sizes/offsets
From: |
Bjørn Forsman |
Subject: |
bug#25233: parted is confused by ISO images, miscalculates sizes/offsets |
Date: |
Tue, 18 Apr 2017 18:08:09 +0200 |
On 18 April 2017 at 17:23, Phil Susi <address@hidden> wrote:
> On 12/19/2016 7:19 AM, Bjørn Forsman wrote:
>> Hi all,
>>
>> [My name is Bjørn Forsman, end user of parted, I'm using parted as my
>> primary partitioning tool.]
>>
>> When I run parted (latest version, 3.2) on an ISO file, it gets
>> confused about the block size:
>>
>> $ parted ubuntu-16.04-desktop-amd64.iso p
>> WARNING: You are not superuser. Watch out for permissions.
>> Warning: The driver descriptor says the physical block size is 2048
>> bytes, but Linux says it is 512 bytes.
>> Ignore/Cancel?
>
> This is because the image contains a mac partition table using a block
> size of 2048 bytes since the image is meant to go on a cdrom, which has
> a sector size of 2048 bytes.
>
>> If I select "Ignore", it misinterprets the size and the partition table:
>>
>> Model: (file)
>> Disk /home/bfo/Downloads/ubuntu-16.04-desktop-amd64.iso: 5944MB
>> Sector size (logical/physical): 2048B/512B
>> Partition Table: mac
>> Disk Flags:
>>
>> Number Start End Size File system Name Flags
>> 1 2048B 6143B 4096B Apple
>> 2 1479MB 1481MB 2425kB EFI
>
> No; that is correctly interpreting the partition table.
Ok. Maybe I was wrong about the parition table (don't know what I
expected). But the size of the image (5944MB) is wrong. The real file
is 1.5GB.
Best regards,
Bjørn Forsman