I believe that I made a boo boo recently when recovering some unused disk space. Without going into painfully embarrassing detail I need to delete an entry in fstab for a now non-existent logical volume. The system reports that the there is a bad superblock for said logical volume. Mainly I expect because there isn't one anymore. How do I edit fstab so as to remove the mount request? For some reason the system will not boot from the cdrom and the I for interactive option is just blown by when the HDD boot starts. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3
On Fri, Aug 24, 2012 at 7:17 AM, James B. Byrne <byrnejb at harte-lyne.ca>wrote:> I believe that I made a boo boo recently when recovering some unused > disk space. Without going into painfully embarrassing detail I need > to delete an entry in fstab for a now non-existent logical volume. > > The system reports that the there is a bad superblock for said logical > volume. Mainly I expect because there isn't one anymore. How do I > edit fstab so as to remove the mount request? For some reason the > system will not boot from the cdrom and the I for interactive option > is just blown by when the HDD boot starts.Can you have some other rescue device besides the CD then, can you boot to USB and create a rescue disk image onto USB and then go and edit it?
On Thu, August 23, 2012 18:17, James B. Byrne wrote:> I believe that I made a boo boo recently when recovering some unused > disk space. Without going into painfully embarrassing detail I need > to delete an entry in fstab for a now non-existent logical volume. > > The system reports that the there is a bad superblock for said logical > volume. Mainly I expect because there isn't one anymore. How do I > edit fstab so as to remove the mount request? For some reason the > system will not boot from the cdrom and the I for interactive option > is just blown by when the HDD boot starts.I discovered the problem with the cd-rom. It is just that, a cd-rom, and I was trying to boot from a dvd rescue disk. I have corrected that problem, edited fstab, and rebooted the system, apparently with success, so far. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3
On Fri, August 24, 2012 03:05, Leonard den Ottolander wrote:> Hello James, > > On Thu, 2012-08-23 at 19:06 -0400, James B. Byrne wrote: >> I discovered the problem with the cd-rom. It is just that, a >> cd-rom, and I was trying to boot from a dvd rescue disk. I >> have corrected that problem, edited fstab, and rebooted the >> system, apparently with success, so far. > > On failed boot one used to be presented with a single user mode root > login. Didn't the system offer you that option after failing to mount > said partition? It might be you need to "escape away" the graphical > boot screen to see that prompt.It still does, and I was able to edit fstab in it. I just could not save the changes because the file system was read-only.> > FYI, the interactive boot mode probably isn't very helpful in a > situation like this as mounting partitions is not an option one can > skip :) . >Ah well. Nothing lost then. But why does the boot loader offer the 'I' option if one cannot make use of it? -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3