[Bug 1556599] Re: ISO images don't have valid partition tables

[KOLANICH]

** Description changed:

  I have an old PC with non-UEFI BIOS (coreboot is also unavailable for my
  mainboard, the bios is updated to the latest (2008 year) version)
  without GPT support. Some years ago, when support for UEFI and GPT had
  been adopted in linux distros, troubles with booting from usb flash
  drive started. I tried a lot of tools (Rufus, Unetbootin, pendrivelinux,
  dd and startup disk creator), none of them had helped.
  
  If I type
- parted path/to/kubuntu/iso
+ parted path/to/kubuntu-16.04-desktop-amd64.iso
  and then
  show
- I get a message that GPT table signature is found. If I ask parted to treat it as GPT, it says both gpt tables are corrupt. If I ask parted to treat this as mbr, it prints nothing. This could be the cause of non-booting.
+  and got
+ >Model:  (file)
+ >Disk path/to/kubuntu-16.04-desktop-amd64.iso: 6083MB
+ >Sector size (logical/physical): 2048B/512B
+ >Partition Table: mac
+ >Disk Flags: 
  
- p.s. More fresh versions of parted (e.g. the one included into 16.04)
- show that there are 2 partitions, one is mac, another is efi, and the
- table type is mac.
+ >Number  Start   End     Size    File system  Name   Flags
+ > 1      2048B   6143B   4096B                Apple
+ > 2      1511MB  1513MB  2425kB               EFI
+ 
+ (I don't know why it writes 6083MB)
+ 
+ fdisk --type=mbr -l ./kubuntu-16.04-desktop-amd64.iso
+ gives
+ >Disk ./kubuntu-16.04-desktop-amd64.iso: 1,4 GiB, 1520762880 bytes, 2970240 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: 0x7d4bf71d
+ >
+ >Device                             Boot   Start     End Sectors  Size Id Type
+ >./kubuntu-16.04-desktop-amd64.iso1 *          0 2970239 2970240  1,4G  0 Empty
+ >./kubuntu-16.04-desktop-amd64.iso2      2950924 2955659    4736  2,3M ef EFI (FAT-12/16/32)

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https://bugs.launchpad.net/bugs/1556599

Title:
  ISO images don't have valid partition tables

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