hey does this mean i can do this on a 119gb recalbox image? and is there windows support

I got this error during boot system with BerryBoot.
Failed to start Remount root and Kernel File systems

Steps:

1. I downloaded official image from Ubuntu 20.04 Server arm64 https://cdimage.ubuntu.com/releases/20.04.2/release/ubuntu-20.04.2-preinstalled-server-arm64+raspi.img.xz
2. I converted this file with unxz command:
   unxz ubuntu-20.04.2-preinstalled-server-arm64+raspi.img.xz
3. I converted image with your script:
   ./berryboot_conv.sh ubuntu-20.04.2-preinstalled-server-arm64+raspi.img ubuntu-20.04.2-arm64.berryboot.img
4. I copied this final image to usb stick and add it simply to berryboot.

Do you know how to fix this problem?

Hello happy new year
I used your script to convert the last 2 raspbian buster images desktop and cli version,the conversion finished without errors.
Upon running and trying to install for example hdparm in cli i got an dpkg error about that libpython3.7 is an empty directory,i tried to install other things also and get the same error

Any help??

Thanks in advance

Hi I've been working to try to convert Chromium OS to BerryBoot image.
root@server:/home/user# kpartx -av chromiumos_image_r92r2-rpi4b.img add map loop7p1 (253:1): 0 8388717 linear 7:7 4612096 add map loop7p2 (253:2): 0 49152 linear 7:7 20480 add map loop7p3 (253:3): 0 4194304 linear 7:7 417792 add map loop7p4 (253:4): 0 49152 linear 7:7 69632 add map loop7p5 (253:5): 0 4096 linear 7:7 413696 add map loop7p6 (253:6): 0 1 linear 7:7 16448 add map loop7p7 (253:7): 0 1 linear 7:7 16449 add map loop7p8 (253:8): 0 32768 linear 7:7 118784 add map loop7p9 (253:9): 0 1 linear 7:7 16450 add map loop7p10 (253:10): 0 1 linear 7:7 16451 add map loop7p11 (253:11): 0 16384 linear 7:7 64 add map loop7p12 (253:12): 0 131072 linear 7:7 282624

It's creating a tiny .img file as output, only 4k.

$ sudo dcfldd if=/dev/sdb of=$(date +%Y%m%d)Xub20p04RPi3BplusHAL3.img
479744 blocks (14992Mb) written.
479744+0 records in
479744+0 records out
$ sudo sync
$ ls -alt *.img
-rw-r--r-- 1 root root 15720251392 Apr 27 16:42 20210427Xub20p04RPi3BplusHAL3.img
$ sudo dcfldd if=/dev/sdb vf=20210427Xub20p04RPi3BplusHAL3.img
Total: Match

$ sudo md5sum /dev/sdb 20210427Xub20p04RPi3BplusHAL3.img
185eb0ba37e247f08ded4a5aacd6b7c4  /dev/sdb
185eb0ba37e247f08ded4a5aacd6b7c4  20210427Xub20p04RPi3BplusHAL3.img

(Deploying berryconv_gui.py with source 20210427Xub20p04RPi3BplusHAL3.img)

$ ls -alt 20210427Xub20p04RPi3BplusHAL3_bb.img
-rw-r--r-- 1 root root 5159284736 Apr 27 18:08 20210427Xub20p04RPi3BplusHAL3_bb.img
$ md5sum 20210427Xub20p04RPi3BplusHAL3*.img
113b55dff49b0c9332ade62fa6efa4d3  20210427Xub20p04RPi3BplusHAL3_bb.img
592640bb29afa5e864e96e74b45245fe  20210427Xub20p04RPi3BplusHAL3.img
$ ls -alt 20210427Xub20p04RPi3BplusHAL3.img
-rw-r--r-- 1 root root 15720251392 Apr 27 19:10 20210427Xub20p04RPi3BplusHAL3.img

After using berryconv_gui.py the source length agrees but MD5SUM has changed.