virtualbox compact-bigsur-vdi android-custom-resolution

virtualbox.md

COMPACT BIGSUR VDI

1. run this in terminal of virtual bigSur but change bs (blocksize in bits) and count (anzahl der zu schreibenden blöcke) to specify the amount of free space you want to Release dd if=/dev/zero of=file.of.zeros bs=67108864 count=1250
   
2. shutdown the vm
   
3. run this in comand promt VBoxManage modifymedium --compact "path\to\bigSur.vdi"
   (4. optional leave files.of.zero to prevent bigsur to reclaim the space)
   

This comment was very helpful for me.

ADD CUSTOM RESOLUTION (for android 9 only 32bit depth works)

"C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" setextradata "android" "CustomVideoMode1" "360x640x32"

VERIVY THAT VIDEOMODE WAS ACAPTED

e (in boot menue)
e (to edit boot cmd)
vga=ask (append)
ESC
b (to boot)
ENTER (to view res options)
remeber hex video moode value (here 360)

SET RES PERMANTLY

debug mode
mount -o remount,rw /mnt
cd /mnt/grub
vi menu.lst
i (insert mode)
vga=(deciaml video mode value here 864)
ESC (exit insert mode)
:w (write)
:x (exit)
reboot -f