I have a Knoppix 4.0 DVD that came bundled with a computer magazine. The DVD seems to run fine. Nevertheless I wanted to check data integrity by entering "testcd" at boot. The computer began checking files, but after a while the DVD drive was spinning down and the screen turned dark. When I pressed a key, the screen came back, and I could see that the computer was testing the KNOPPIX2 file when it got stuck. I tried testcd with two different computers and never got beyond the KNOPPIX2 file.
Can anybody confirm this issue? Is "testcd" supported by the DVD versions of Knoppix?
Cisco SG95-16 16-Port Gigabit Switch SG95-16-KR
$47.00
Cisco Meraki MS120-48LP 48 Port Blade Ethernet Switch UNCLAIMED
$799.00
Cisco C3900-SPE200/K9 Cisco Services Performance Engine 200
$109.95
NEW Cisco Meraki MR44 802.11ax Wi-fi 6 Wireless Access Point MR44-HW UNCLAIMED
$399.98
Cisco WS-C3850-48P-L 48-Port Gigabit 3850 PoE Switch w/ 715W+ C3850-NM-4-1G Mod
$83.00
Cisco QSFP-40G-SR-BD BiDi Short-reach Transceiver, 1 Year Warranty
$17.25
Cisco C3850-NM-2-10G 2 Port Network Exp.Module for 3850
$38.99
Genuine Cisco SFP-10G-SR V03 10GBASE-SR SFP+ Transceiver Module 10-2415-03
$8.00
Cisco WS-C3850-48F-S Catalyst 3850 48x 1GB PoE+ RJ-45 1x Module Switch
$185.00
Cisco C9300-48 48 Port Switch Dual PSU W/C9300-NM-8X P/N: C9300-48U-A Tested
$799.99