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Operating Systems Linux Red Hat CentOS and XP dualboot + ext3/ntfs mount Post 302331201 by svanslyck on Saturday 4th of July 2009 04:08:30 PM
Old 07-04-2009
Network

I didn't create a boot disk, if you mean floppy. I installed CentOS to a second hard disk drive. I then created the boot.lnx file with
Code:
dd if=/dev/sdb1...

which didn't work so I then tried
Code:
dd if=/dev/VolGroup00/LogVol00...

which also didn't work. The df command revealed both. In both cases I get nothing. When, however, I try to boot directly to the drive using F9 to select the POST boot menu, then at least I get "Missing OS."

Yes, in both cases, I copied the file to C:\. But if the problem is that it's a USB drive, I guess I can fix that by connecting the drive directly. The only reason I have it as a USB drive is that it's a misc. drive I just had sitting around and I connected it with a universal drive adapter to "just see."

I do not know the difference between /dev/sdb1 and /dev/VolGroup00/LogVol00 - when I did a df they both appeared so I thought I would try both. Possibly one is the HDD with Windows on it, I don't know. All these cryptic abbrevs., I don't know what they mean because I'm used to drive letters and a command prompt that tells me where I am in the file system.

==================================

Update - connecting the drive via SATA instead of USB did the trick. I formatted, connected via SATA, installed, and went from there.

the linux.bin file to create, it turns out, was the one from /dev/sdb1..., not /dev/VolGroup00/LogVol00.... I'm not sure if it made a difference because, just as with balancing my checkbook, once you get things working, STOP THERE.

Now, if I only knew how to unload Gnome so I could try KBE, and how to see a context-sensitive prompt, and how to get an underscore cursor instead of a block cursor, and how to get terminal output in white instead of dark blue (on black), and..., and..., and..., and.... Um, well thanks for listening.

Last edited by svanslyck; 07-04-2009 at 07:47 PM..
 

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RXFORMAT(8)						      System Manager's Manual						       RXFORMAT(8)

NAME
rxformat - format floppy disks (2.11BSD) SYNOPSIS
rxformat special DESCRIPTION
The rxformat program formats a diskette in the specified drive associated with the special device special. Special is normally /dev/rrx0?, for drive 0, or /dev/rrx1?, for drive 1, where ``?'' is either "a" or "b" to indicate single or double density access. The ``raw'' device must be used. Single density is compatible with the IBM 3740 standard (128 bytes/sector). In double density, each sector contains 256 bytes of data. Before formatting a diskette rxformat prompts for verification if standard input is a tty (this allows a user to cleanly abort the opera- tion; note that formatting a diskette will destroy any existing data). Formatting is done by the hardware. All sectors are zero-filled. DIAGNOSTICS
`No such device' means that the drive is not ready, usually because no disk is in the drive or the drive door is open. Other error mes- sages are selfexplanatory. FILES
/dev/rrx?? SEE ALSO
rx(4) AUTHOR
Helge Skrivervik BUGS
A floppy may not be formatted if the header info on sector 1, track 0 has been damaged. Hence, it is not possible to format a completely degaussed disk. (This is actually a problem in the hardware.) 3rd Berkeley Distribution November 17, 1996 RXFORMAT(8)
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