Grid Infrastructure Removal / ASM disks Oracle VM box

These notes from Oracle Base can be used to remove a failed Grid Infrastructure install but I have added the piece below as I hit a problem with ASM disks on Oracle Virtual box.

https://oracle-base.com/articles/rac/clean-up-a-failed-grid-infrastructure-installation

Following a failed RAC attack install, tried to delete and then add the asm disks.

However, Oracle Virtaul box holds onto the disk information and won't let you add a disk with the same name. The solution is to use vboxmanage from the cmd prompt.

In the example below, removes the 5gig ASM disk.

C:\Program Files\Oracle\VirtualBox>vboxmanage list hdds

UUID: a35460c0-eef6-4bc5-a706-66dbddce04d7
Parent UUID: base
State: inaccessible
Type: shareable
Location: C:\racattack12c\asm1.vdi
Storage format: VDI
Capacity: 5120 MBytes
Encryption: disabled

UUID: 266df39c-8e4b-40cf-8c34-500d69ee1ab9
Parent UUID: base
State: created
Type: normal (base)
Location: C:\racattack12c\collabn2.vdi
Storage format: VDI
Capacity: 30720 MBytes
Encryption: disabled

UUID: cfec563f-a1a2-489c-922c-808fbaa3e984
Parent UUID: base
State: created
Type: normal (base)
Location: C:\racattack12c\collabn1.vdi
Storage format: VDI
Capacity: 30720 MBytes
Encryption: disabled


C:\Program Files\Oracle\VirtualBox>vboxmanage closemedium a35460c0-eef6-4bc5-a706-66dbddce04d7 --delete

0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

C:\Program Files\Oracle\VirtualBox>vboxmanage list hdds

UUID: 266df39c-8e4b-40cf-8c34-500d69ee1ab9
Parent UUID: base
State: created
Type: normal (base)
Location: C:\racattack12c\collabn2.vdi
Storage format: VDI
Capacity: 30720 MBytes
Encryption: disabled

UUID: cfec563f-a1a2-489c-922c-808fbaa3e984
Parent UUID: base
State: created
Type: normal (base)
Location: C:\racattack12c\collabn1.vdi
Storage format: VDI
Capacity: 30720 MBytes
Encryption: disabled


--Syntax to resize disk

C:\Program Files\Oracle\VirtualBox>.\VBoxManage.exe modifyhd "C:\Users\206545\VirtualBox VMs\collabn1\collabn1.vdi" --resize 20480

0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%