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parted [2021/09/12 09:31] – created normanparted [2025/10/02 12:05] (current) – external edit 127.0.0.1
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-====== A partitioning scheme for UEFI GPT simpler than the one suggested by the Gentoo Handbook ======+====== Mount single partition from image of entire disk (device) ====== 
 + 
 +Get the partition layout of the image 
 + 
 +<code>fdisk -lu sda.img</code> 
 + 
 + 
 +<code>... 
 +Units = sectors of 1 * 512 = 512 bytes 
 +Sector size (logical/physical): 512 bytes / 512 bytes 
 +... 
 +  Device Boot      Start         End      Blocks   Id  System 
 +sda.img1   *          56     6400000     3199972+   c  W95 FAT32 (LBA)</code> 
 + 
 + 
 +Calculate the offset from the start of the image to the partition start 
 + 
 +Sector size * Start = (in the case) 512 * 56 = 28672 
 + 
 +Mount it on /dev/loop0 using the offset 
 + 
 +<code>losetup -o 28672 /dev/loop0 sda.img</code> 
 + 
 +Now the partition resides on /dev/loop0. You can fsck it, mount it etc 
 + 
 +<code>fsck -fv /dev/loop0 
 +mount /dev/loop0 /mnt</code> 
 + 
 + 
 +Unmount 
 + 
 +<code>umount /mnt 
 +losetup -d /dev/loop0</code> 
 + 
 + 
 +Source: [[https://askubuntu.com/questions/69363/mount-single-partition-from-image-of-entire-disk-device|External Link]] 
 + 
 +====== Attach IMG file ====== 
 + 
 +<code> 
 +losetup --find --show --partscan fred.image.dd 
 +</code> 
 +there should be partitions ( /dev/loopXpY ) 
 +Find one, You need: 
 +<code> 
 +cat /proc/partitions 
 +ls -l /dev/loop* 
 +</code> 
 + 
 +<code> 
 +mdadm -A -R /dev/md9 /dev/loop1p4 
 +</code> 
 + 
 +<code> 
 +mount /dev/md9 /mnt/loop 
 +</code> 
 +====== Parted Use ====== 
 + 
 + 
 +===== A partitioning scheme for UEFI GPT simpler than the one suggested by the Gentoo Handbook =====
  
 I had always gone the BIOS MBR route and used fdisk for partitioning, but today I went for an UEFI GPT install using parted. Scary stuff! The installation handbook goes for a partitioning scheme which should work on most systems, but is unnecessary for UEFI GPT: I had always gone the BIOS MBR route and used fdisk for partitioning, but today I went for an UEFI GPT install using parted. Scary stuff! The installation handbook goes for a partitioning scheme which should work on most systems, but is unnecessary for UEFI GPT:
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 mkpart primary fat32 1 101 # or 257 for non-GRUB mkpart primary fat32 1 101 # or 257 for non-GRUB
 name 1 esp name 1 esp
 +
 +SWAP MISSING
 +
 +
 mkpart primary ext4 101 -1 # or 257 for non-GRUB mkpart primary ext4 101 -1 # or 257 for non-GRUB
 name 2 rootfs name 2 rootfs