Unable to launch Rescue screen when booting System Recovery Disk from DVD drive other than /dev/sr0

Unable to launch Rescue screen when booting System Recovery Disk from DVD drive other than /dev/sr0

Article: 100044810
Last Published: 2021-12-02
Ratings: 0 0
Product(s): System Recovery

Problem

Unable to launch Rescue screen when booting System Recovery Disk (SRD) from DVD drive other than /dev/sr0. For details, please see Error Message section.

Error Message

Couldn't mount /dev/sr0. No suitable images. No medium found on /dev/sr0.

/dev/root does not exists.

Figure 1

Cause

The first DVD drive (/dev/sr0) is always specified as DVD device in the SRD.
However, your DVD drive is not /dev/sr0 but /dev/sr2 or /dev/sdc1.

Solution

Workaround:

1. Run the below command on "dracut:/#" shell.

# blkid

2. Find CDROM and the device name.

3. Shut down and boot from the SRD.

4. Rescue screen appears.

In case of Red Hat 7.x, see Figure 2a.
In case of Red Hat 8.x, see Figure 2b.

Figure 2a Red Hat 7.x



Figure 2b Red Hat 8.x

5. Select edit mode.

In case of Red Hat 7.x press [Tab].
In case of Red Hat 8.x press 'e'.

Figure 3a Red Hat 7.x

Figure 3b Red Hat 8.x



6. Change the value from /dev/sr0 to /dev/sr2 or /dev/sdc1. (See Figure 4a and 4b)

Figure 4 Red Hat 7.x

Figure 4b Red Hat 8.x

4. In case of Red Hat 7.x, press [Enter] key. In case of Red Hat 8.x, press [CTRL]+ x.
 

Product version

Veritas System Recovery 18 or later

 

Was this content helpful?