Dlk at 15:15, 25 February 2020

2020-02-25T15:15:07Z

Dlk: Created page with "Obtain the SystemRescueCD ISO image at http://www.system-rescue-cd.org/ Figure out which disk device is the USB key (we assume /dev/sdx in this example) $ lsblk Unmount an..."

2020-02-25T03:09:33Z

Created page with "Obtain the SystemRescueCD ISO image at http://www.system-rescue-cd.org/ Figure out which disk device is the USB key (we assume /dev/sdx in this example) $ lsblk Unmount an..."

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Obtain the SystemRescueCD ISO image at http://www.system-rescue-cd.org/

Figure out which disk device is the USB key (we assume /dev/sdx in this example)
$ lsblk

Unmount any and all mounted partitions
$ sudo umount /dev/sdx1

Zero out the USB key (optional step)
$ sudo dd if=/dev/zero of=/dev/sdx status=progress

Eject, remove and reinsert the USB key (only if optional step above is included)
$ sudo eject /dev/sdx

Check the disk device assignment (only if optional step above is included)
$ lsblk

Copy the SystemRescueCD image onto the key
$ sudo dd if=systemrescuecd-6.0.7.iso of=/dev/sdx status=progress

Eject, remove and reinsert the USB key
$ sudo eject /dev/sdx

Check the disk device assignment
$ lsblk

Create the extra partition
$ sudo fdisk /dev/sdx

<pre>
Welcome to fdisk (util-linux 2.33.2).
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/sdx: 7.2 GiB, 7743995904 bytes, 15124992 sectors
Disk model: USB DISK 2.0
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: 0x5c94c26c

Device Boot Start End Sectors Size Id Type
/dev/sdx1 * 0 1415167 1415168 691M 0 Empty
/dev/sdx2 236 3115 2880 1.4M ef EFI (FAT-12/16/32)

Command (m for help): n
Partition type
p primary (2 primary, 0 extended, 1 free)
e extended (container for logical partitions)
Select (default p):

Using default response p.
Selected partition 3
First sector (1415168-15124991, default 1415168): 1415172
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1415168-15124991, default 15124991):

Created a new partition 3 of type 'Primary' and of size 6.6 GiB.

Command (m for help): w
</pre>

Eject, remove and reinsert the USB key
$ sudo eject /dev/sdx

Check the disk device assignment
$ lsblk

Create the filesystem in the partition
$ sudo mkfs.ext4 -L EXTRAS /dev/sdx3

Mount this filesystem and copy custom content onto it. To mount the filesystem during boot, and to use it to persist state between boots, append the following option to the "linux" command line of a grub boot menu item:
cow_label=EXTRAS

[[Category: Linux]]

@@ Line 17: / Line 17: @@
 Copy the SystemRescueCD image onto the key
-   $ sudo dd if=systemrescuecd-6.0.7.iso of=/dev/sdx status=progress
+   $ sudo dd if=systemrescuecd-6.0.7.iso of=/dev/sdx oflag=direct status=progress
 Eject, remove and reinsert the USB key
@@ Line 54: / Line 54: @@
 Using default response p.
-Selected partition 3
+Partition number (3,4, default 3):
 First sector (1415168-15124991, default 1415168): 1415172
-Last sector, +/-sectors or +/-size{K,M,G,T,P} (1415168-15124991, default 15124991):
+Last sector, +/-sectors or +/-size{K,M,G,T,P} (1415172-15124991, default 15124991):
-Created a new partition 3 of type 'Primary' and of size 6.6 GiB.
+Created a new partition 3 of type 'Linux' and of size 6.6 GiB.
 Command (m for help): w
 </pre>

Setting Up A SystemRescueCD USB Key - Revision history

Dlk at 15:15, 25 February 2020

Dlk: Created page with "Obtain the SystemRescueCD ISO image at http://www.system-rescue-cd.org/ Figure out which disk device is the USB key (we assume /dev/sdx in this example) $ lsblk Unmount an..."