The host is Windows 10 x64. In order to access the SD card in VM, I created a VMDK file for the card, and attached it to VM as a SATA hard drive. I started VirtualBox as administrator, and ran commands as root in Debian. Every time I wrote to the card, it ended up with error:
=======================================
The I/O cache encountered an error while updating data in medium "ahci-0-1" (rc=VERR_ACCESS_DENIED). Make sure there is enough free space on the disk and that the disk is working properly. Operation can be resumed afterwards.
Error ID: BLKCACHE_IOERR
Severity: Non-Fatal Error
=======================================
And the VM crashed (black screen).
Any suggestions?
Virtual machine (Debian 9 x64) crashes when writing to SD card.
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Re: Virtual machine (Debian 9 x64) crashes when writing to SD card.
How? What does the VMDK look like?fiedel wrote:I created a VMDK file for the card
That's obviously an "access denied" error. What are the permissions on the card itself? I am running VirtualBox as a simple user, but when I have to mount an external drive, I have to change the permissions at the root level *and* eject the drive from my OSX host:fiedel wrote:rc=VERR_ACCESS_DENIED
where "TDK-8GB-NTFS" in the volume label of /dev/disk2. Unplugging and re-plugging the drive needs permissions correction and ejecting it again.$ ls -al /dev/disk2* brw-r----- 1 root operator 1, 5 8 Ιολ 11:55 /dev/disk2 brw-r----- 1 root operator 1, 6 8 Ιολ 11:55 /dev/disk2s1 brw-r----- 1 root operator 1, 7 8 Ιολ 11:55 /dev/disk2s2 brw-r----- 1 root operator 1, 8 8 Ιολ 11:55 /dev/disk2s3 $ sudo chmod og+rw /dev/disk2 $ ls -al /dev/disk2* brw-rw-rw- 1 root operator 1, 5 8 Ιολ 11:55 /dev/disk2 brw-r----- 1 root operator 1, 6 8 Ιολ 11:55 /dev/disk2s1 brw-r----- 1 root operator 1, 7 8 Ιολ 11:55 /dev/disk2s2 brw-r----- 1 root operator 1, 8 8 Ιολ 11:55 /dev/disk2s3 $ diskutil eject /Volumes/TDK-8GB-NTFS/
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