Problem with burning ISO to USB

puskas · 10-22-2021, 05:23 PM

I have an USB I want to burn an ISO to. This is the info:
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *15.4 GB disk2
1: EFI EFI 209.7 MB disk2s1
2: Microsoft Basic Data Linux 15.2 GB disk2s2

I use command:
sudo dd bs=4m if=/Users/username/Downloads/linuxmint-20.2-cinnamon-64bit.iso of=/dev/rdisk2

Then it says:
dd: /dev/rdisk2: Resource busy

I was adviced to unmount the USB but then when running the command again it want me to reject the USB. But I ignore and have to erase the USB with disk utility. It doesn't work with Scheme: Apple partition map, so I use GUID partition map and I tried both ExFAT, MS-DOS(FAT) and Mac OS Extended (Journaled). Everyone restores the USB but always puts me in the same loop again and again.

Is there any other solution to Resource busy than unmount? Or why doesn't my USB like: diskutil unmountDisk

jefro · 10-22-2021, 07:24 PM

I'd think it odd to use rdisk in linux.

What I think is you have a mac and you are trying to use dd.

What does diskutil list say?

HappyTux · 10-22-2021, 07:38 PM

Quote:

Originally Posted by puskas

I have an USB I want to burn an ISO to. This is the info:
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *15.4 GB disk2
1: EFI EFI 209.7 MB disk2s1
2: Microsoft Basic Data Linux 15.2 GB disk2s2

I use command:
sudo dd bs=4m if=/Users/username/Downloads/linuxmint-20.2-cinnamon-64bit.iso of=/dev/rdisk2

Then it says:
dd: /dev/rdisk2: Resource busy

I was adviced to unmount the USB but then when running the command again it want me to reject the USB. But I ignore and have to erase the USB with disk utility. It doesn't work with Scheme: Apple partition map, so I use GUID partition map and I tried both ExFAT, MS-DOS(FAT) and Mac OS Extended (Journaled). Everyone restores the USB but always puts me in the same loop again and again.

Is there any other solution to Resource busy than unmount? Or why doesn't my USB like: diskutil unmountDisk

Try a program I use instead of trying to get those commands to work. It works with most OSs you would want it to do so with.

http://wiki.rosalab.ru/en/index.php/ROSA_ImageWriter

EDIT: BTW you may want to try a newer than year and a half old distribution as the source to boot with when done.

Punk-in-D · 10-23-2021, 07:45 AM

Could the "r" in your command be a typo?

Compare:

Quote:

I have an USB I want to burn an ISO to. This is the info:
/dev/disk2 (external, physical):

Quote:

of=/dev/rdisk2

Also agree with HappyTux, a program is safer normally. You don't want to accidentally wipe out a drive you don't intend to.

puskas · 10-23-2021, 07:49 AM

Yes, I'm using mac

I've used both disk and rdisk. No difference. But this instruction uses both and says:"Note: Using /dev/rdisk instead of /dev/disk may be faster.":
https://www.lewan.com/blog/2012/02/1...-x-from-an-iso

Punk-in-D · 10-23-2021, 07:57 AM

I don't know the least about working on Macs. Good luck, I hope you find a solution.
I've used Unetbootin (sourceforge)in the past for making bootable usb-sticks. That program works on some of my laptops but not all.

HappyTux · 10-23-2021, 09:15 AM

Quote:

Originally Posted by puskas

Yes, I'm using mac

I've used both disk and rdisk. No difference. But this instruction uses both and says:"Note: Using /dev/rdisk instead of /dev/disk may be faster.":
https://www.lewan.com/blog/2012/02/1...-x-from-an-iso

Code:

MacUser2525:~$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *2.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk1         128.0 GB   disk0s2
   3:                  Apple_HFS Music                   639.5 GB   disk0s3
   4:                  Apple_HFS Sea_To_Do               1.2 TB     disk0s4

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +128.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Catalina9600kNVMe - ... 80.7 GB    disk1s1
   2:                APFS Volume Catalina9600kNVMe       11.3 GB    disk1s2
   3:                APFS Volume Preboot                 81.1 MB    disk1s3
   4:                APFS Volume Recovery                529.0 MB   disk1s4
   5:                APFS Volume VM                      1.1 MB     disk1s5

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *15.6 GB    disk2
   1:                       0xEF                         3.8 MB     disk2s2

/dev/disk3 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *480.1 GB   disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                 Apple_APFS Container disk4         119.3 GB   disk3s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk3s3
   4:                  Apple_HFS Files                   359.6 GB   disk3s4

/dev/disk4 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +119.3 GB   disk4
                                 Physical Store disk3s2
   1:                APFS Volume Catalina9600kSSD - Data 71.6 GB    disk4s1
   2:                APFS Volume Catalina9600kSSD        18.7 GB    disk4s2
   3:                APFS Volume Preboot                 81.1 MB    disk4s3
   4:                APFS Volume Recovery                543.1 MB   disk4s4
   5:                APFS Volume VM                      1.1 MB     disk4s5

Code:

MacUser2525:~$ sudo dd bs=4m if=/Users/MacUser2525/Downloads/linuxmint-20.2-cinnamon-64bit.iso of=/dev/rdisk2
Password:
dd: /Users/MacUser2525/Downloads/linuxmint-20.2-cinnamon-64bit.iso: No such file or directory
MacUser2525:~$ sudo dd bs=4m if=/Volumes/Sea_To_Do/Downloads/linuxmint-20.2-cinnamon-64bit.iso of=/dev/rdisk2
515+1 records in
515+1 records out
2162147328 bytes transferred in 109.312035 secs (19779591 bytes/sec)

When first putting in my spare disk Catalina came up with "The disk you inserted was not readable by this computer" I choose the Eject option. Then once I got the correct path it work fine and in couple of minutes I got the same again when it finished successfully. Open Disk utility in the utilities folder and eject the pen drive before issuing your command it should work after this.

EDIT: and now I think of it the list result after the procedure.

Code:

MacUser2525:~$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *2.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk1         128.0 GB   disk0s2
   3:                  Apple_HFS Music                   639.5 GB   disk0s3
   4:                  Apple_HFS Sea_To_Do               1.2 TB     disk0s4

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +128.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Catalina9600kNVMe - ... 80.8 GB    disk1s1
   2:                APFS Volume Catalina9600kNVMe       11.3 GB    disk1s2
   3:                APFS Volume Preboot                 81.1 MB    disk1s3
   4:                APFS Volume Recovery                529.0 MB   disk1s4
   5:                APFS Volume VM                      1.1 MB     disk1s5

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     Apple_partition_scheme                        *15.6 GB    disk2
   1:        Apple_partition_map                         4.1 KB     disk2s1
   2:                  Apple_HFS                         4.1 MB     disk2s2

/dev/disk3 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *480.1 GB   disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                 Apple_APFS Container disk4         119.3 GB   disk3s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk3s3
   4:                  Apple_HFS Files                   359.6 GB   disk3s4

/dev/disk4 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +119.3 GB   disk4
                                 Physical Store disk3s2
   1:                APFS Volume Catalina9600kSSD - Data 71.6 GB    disk4s1
   2:                APFS Volume Catalina9600kSSD        18.7 GB    disk4s2
   3:                APFS Volume Preboot                 81.1 MB    disk4s3
   4:                APFS Volume Recovery                543.1 MB   disk4s4
   5:                APFS Volume VM                      1.1 MB     disk4s5

Trihexagonal · 01-23-2022, 05:46 PM

Quote:

Originally Posted by puskas

Then it says:
dd: /dev/rdisk2: Resource busy

I was adviced to unmount the USB but then when running the command again it want me to reject the USB. But I ignore and have to erase the USB with disk utility. It doesn't work with Scheme: Apple partition map, so I use GUID partition map and I tried both ExFAT, MS-DOS(FAT) and Mac OS Extended (Journaled). Everyone restores the USB but always puts me in the same loop again and again.

Is there any other solution to Resource busy than unmount? Or why doesn't my USB like: diskutil unmountDisk

The USB stick you use the dd command on MUST be unmounted. Period.

It tried to tell you that and wanted you to EJECT the device, not REJECT it, but you would have none of it.

I do this all the time. Here is how to do it right:

1. Download the .iso to the Directory of your choosing. Let's say Downloads.
2. Insert the USB devise and make sure it is not mounted.
3. Use the cd command to change to that Directory.

Code:

cd /home/jitte/Downloads

4. Now as root run the following command with a change to the Linux designation. On my FreeBSD box the mount point is da0s1, da0s2, etc. It will be different on Linux, I'm not sure what yours will be so won't take a chance on telling you wrong:

Code:

dd if=./kali-linux-2021.4a-amd64.iso of=/dev/da0 bs=512k

Wait, wait, wait.

When done remove it and go in peace..