Other mounting iso as r/w

[balanga]

Is there any way to make an mdconfig backed file R/W?

I have mounted an ISO file using '-t 9660' and would like to be able to change it.

Is that possible?

 

[serjsk8]

Hello
You can't mount an iso in R/W mode.
You need to mount the ISO, copy the contents to another folder, make changes, and then burn the new ISO.

 

[balanga]

Hello
You can't mount an iso in R/W mode.
You need to mount the ISO, copy the contents to another folder, make changes, and then burn the new ISO.

How do I create a new ISO after amending the copied contents?

 

[serjsk8]

Something like this...
I haven't done this in a long time

1. Mount ISO

# mdconfig -a -t vnode -f /home/user/my.iso -u 0
# mount -t cd9660 /dev/md0 /mnt


2. Copy ISO files and modify

# mkdir /tmp/my_new_iso
# cp -R /mnt/* /tmp/my_new_iso/
# umount /mnt
# mdconfig -d -u 0


3. Create new iso

# mkisofs -J -R -no-emul-boot -V "MY_LABEL" -o /home/user/my_new_custom.iso /tmp/my_new_iso


sysutils/mkisofs

 

[serjsk8]

Chapter 20. Storage

This chapter covers the use of disks and storage media in FreeBSD. This includes SCSI and IDE disks, CD and DVD media, memory-backed disks, and USB storage devices.

docs.freebsd.org

 

[balanga]

Something like this...
I haven't done this in a long time

1. Mount ISO

# mdconfig -a -t vnode -f /home/user/my.iso -u 0
# mount -t cd9660 /dev/md0 /mnt


2. Copy ISO files and modify

# mkdir /tmp/my_new_iso
# cp /mnt/ /tmp/my_new_iso/
# umount /mnt
# mdconfig -d -u 0


3. Create new iso

# mkisofs -J -R -no-emul-boot -V "MY_LABEL" -o /home/user/my_new_custom.iso /tmp/my_new_iso


sysutils/mkisofs

mkisofs: Missing boot image name, use -eltorito-boot option.

 

[serjsk8]

-b boot/cdboot

# mkisofs -J -R -b boot/cdboot -no-emul-boot -V "MY_LABEL" -o /home/user/my_new_custom.iso /tmp/my_new_iso

 

[balanga]

mkisofs: Uh oh, I cant find the boot image 'boot/cdboot' inside the target tree.

I guess I need to copy /boot/cdboot to /tmp/my_new_iso/

 

[serjsk8]

Please, can you tell me what kind of ISO you're doing? do you want it to be bootable?

 

[serjsk8]

if you don't need a bootable ISO:

mkisofs -J -R -V "MY_LABEL" -o /home/user/my_new_custom.iso /tmp/my_new_iso

 

[balanga]

Please, can you tell me what kind of ISO you're doing? do you want it to be bootable?

I'm just trying to add something to Hiren's BOOT CD.

I will only be using it to boot via Ventoy.

 

[serjsk8]

ahh this is not a FreeBSD iso and it should be a bootable ISO.

 

[serjsk8]

1. Mount ISO
# mdconfig -a -t vnode -f /home/user/hiren.iso -u 0
# mount -t cd9660 /dev/md0 /mnt

2. Copy and edit

# mkdir /tmp/hiren_new
# cp -a /mnt/. /tmp/hiren_new/


3. Create custom ISO
# mkisofs \
-iso-level 3 \
-udf \
-J -R \
-V "HIREN_PE" \
-b boot/etfsboot.com \
-no-emul-boot \
-boot-load-size 8 \
-o /home/user/hiren_custom.iso \
/tmp/hiren_new

this is boot/etfsboot.com - BIOS loader for Windows, not UEFI.

 

[serjsk8]

YUMI Live Linux Multiboot Bootable USB Drives ▷ Made Easy

YUMI Multiboot bootable USB boot maker. A Windows media creation tool to create multibooting USB drives. Run multiple ISOs from one flash drive.

yumiusb.com

I'll leave it here, maybe you can use it.
I remember using it a long time ago.
And it's like Hiren's BOOT CD, only you can add what you need.
It uses the syslinux loader or grub2.