How to Change the UUID of VirtualBox Virtual Disk (.VDI)
March 26th, 2022I copied a virtual disk (actually the entire machine) for a VirtualBox VM and tried to add the machine to the GUI list. It wouldn't add because the virtual disk already existed. I ended up needing to change the UUID of the virtual disk and modify the virtual machine config file accordingly. The command to do this is:
VBoxManage.exe internalcommands sethduuid "D:\NewVM\myDisk1.vdi"
Reference (also has other commands):
Change the UUID of Virtual Disk
Changing UUID for VirtualBox Virtual Machines
Dishwasher 'Clean' Light Blinking and Dishwasher Not Running
March 26th, 2022Recently our dishwasher stopped running. The 'clean' light was on and would flash if you tried to start the cycle. Apparently this happens if there is a fault (generic - many things cause it) and can be cleared by pushing NORMAL WASH and HEATED DRY in sequence 2-3 times. I did this on ours and it cleared the fault and has been running properly since. There may be an issue that causes it to trip again in which case I will investigate further but often times, it is a fluke that causes the issue and it may never be an issue again.
References:
How do I fix "clean" light blinking on Maytag dishwasher
Dishwasher Blinking Clean Light
grub2 - remember last selected item
March 22nd, 2022For nearly all cases, I want the bootloader on a multi-boot machine to boot into the last selected option. I've had grub2 on a number of distros now and I always need to jump through hoops to get this to work properly. It looks like I need to do a couple things:
1. Edit the /etc/default/grub file and ensure the following two lines exist:
GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true
2. Update grub. For debian/ubuntu, the command is:
update-grub
for Arch/Rocky the command is:
grub2-mkconfig –o /boot/grub2/grub.cfg
Now for the hitch - on an EFI system (at least Arch and Rocky), you ALSO need to run this command (substituting the appropriate distribution name):
grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
