Wiping multiple drives query

General Discussion
1

I just got a Sabrent USB 3.0 4 Bay 2.5" hard drive/ssd docking station

Tied it into my Raspberry Pi 4

I see the drives just fine…can I wipe /dev/sdc and /dev/sdd with this command simultaneously?

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 223.6G  0 disk
└─sda1   8:1    0 223.6G  0 part /
sdb      8:16   1  14.6G  0 disk
└─sdb1   8:17   1   256M  0 part /boot
sdc      8:32   0 931.5G  0 disk
├─sdc1   8:33   0   500M  0 part /media/devmon/ESP
├─sdc2   8:34   0   128M  0 part
├─sdc3   8:35   0 918.1G  0 part /media/devmon/OS
├─sdc4   8:36   0   522M  0 part /media/devmon/sdc4-usb-SABRENT_DISK00_D
└─sdc5   8:37   0  12.3G  0 part /media/devmon/Image
sdd      8:48   0 931.5G  0 disk
├─sdd1   8:49   0   260M  0 part /media/devmon/SYSTEM
├─sdd2   8:50   0    16M  0 part
├─sdd3   8:51   0 930.5G  0 part /media/devmon/OS-2
└─sdd4   8:52   0   800M  0 part /media/devmon/RECOVERY
zram0  254:0    0     2G  0 disk [SWAP]


dd if=/dev/zero of=/dev/sdc of=/dev/sdd bs=1M status=progress

Will it attempt to wipe both drives at the same time…yeah it’s over slow USB 3.0 speeds…but is that the correct command??

2

You can only have one of
But I think you can do it this way:

sudo dd if=/dev/zero bs=1M status=progress | sudo tee /dev/sdc /dev/sdd > /dev/null

3

ok, cool…I give it a try asap, I have 5 HGST 1T laptop drives coming in to test…gonna try to wipe 4 of em in the bay at the same time…gonna be slow thru USB 3.0 I bet