On 06/21/2013 12:29 AM Ethan Rosenberg, PhD wrote:
Ken -
Tried what you said, but I cannot make it work.
....
dd if=/home/ethan/DOSutil/FreeDOS-1.1-USB-Boot.img of=/dev/sdb
63488+0 records in
63488+0 records out
32505856 bytes (33 MB) copied, 0.447414 s, 72.7 MB/s
At this point you can try to reboot into FreeDOS. That is, with the
flash drive inserted, do a shutdown and then restart the computer again.
(Many Linuxes have a 'reboot' command you can run as root. You may
also have a menu item in your GUI for shutting down and/or rebooting.)
During the reboot process, you'll want to check the computer's BIOS to
make sure that whatever the flashdrive is plugged into (USB, I assume)
is an acceptable boot device and that it is checked before your normal
boot device (which, I'm assuming is your hard drive). If you don't know
or are unsure about how to do settings in your BIOS, then please read up
on that before changing anything. You should have gotten a manual with
your computer-- or perhaps you can download the manual from the web.
rosenberg:/media# fdisk -l
Disk /dev/sdb: 4051 MB, 4051697664 bytes
64 heads, 32 sectors/track, 3864 cylinders, total 7913472 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00077d8f
Device Boot Start End Blocks Id System
/dev/sdb1 * 32 63487 31728 e W95 FAT16 (LBA)
You didn't have to do the step above, but it doesn't hurt anything. In
this case, it's good that you did it, only because it shows that the 'dd
...' command did its work properly.
Is 'fdisk -l' really the entire command you typed in to get the above
output?
Was there another command you ran prior to running the one below? If
not, perhaps there's some automount script which ran in invisibly in
background. In any event, the output from the command below shows a
valid vfat system written to /dev/sdb1... also a good sign. But as said
above, you should try to reboot into FreeDOS to test the image you put
on your flashdrive.
rosenberg:/media# mount
/dev/sdb1 on /media/bkup type vfat
(ro,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=utf8,shortname=mixed,errors=remount-ro)
Since we don't know what was mounted, it's hard to know what to say
about the below.
rosenberg:/media# cd /media/bkup
rosenberg:/media/bkup# ls
64k of m.emo conditio.n i = (eq.ual in a bat.ch %lukb?.ree
ng used.in pt to th.e d sage.??P.AUS tell you. if tring].?.?/U
able to.the ctive.?.Sea es curre.nt ings res.our mand as.if
n if the. sp racter)?. $ s and di.rec t enter.to t]?? te.xt
ame? D Curr.ent exists..the in the e.nvi me?
no para.met rd outpu.t o seems to. be ters to.dis tting.?I.f a
and for.tha debug [o.N | fied com.man into fre.eDO mes a fi.le/
not to e.xec rectory.off sets, o.r r than sig.n)? umber of. th
ariable..??/ DEBUG wi.tho %f IN (-.--s ions as.you meters i.n a
nsize2]....] rectory.sta shows. ke than the.? while t.he
ariable.nam director.y s f.ree irectory.nam minimum.?
o?change. cu reeCOM o.r o sign to.the ? The '.*' window t.owa
ar sign).? ?DIRS?.emo Fre.eDO is remo.ved minsize.2 s
?.ode riables..??s sion:?%s.? the comm.and within.the
ason: %u. (% DOWN]??D.own g1==stri.ng2 istory b.uff mmand pr.omp
ommand [.arg rnal com.man Speci.fie the con.ten y out if. th
assigns. th drive an.d p ge:?"pre.ss istribut.ion m, speci.fy
ontents.of rogram.. Re specify. as the path. sp ype veri.FY
ation an.d n eater-th.an he for c.omm ? label n?
ORLEVEL.num rrent ti.me splay th.e v thout a.par
ays the.Fre ectory.?.Typ hrinks a. UM lays or.set name2]??.Not
os comma.nd r [/r] [./w] ST filen.ame tical Er.ror
backsp.ace edirect.the h you wi.sh le; by d.efa n and li.nef
our file.s a rsion an.d o ST filen.ame TIME fro.m b
ber spec.ifi e [drive.:]p ibutors..? lename [.par nded
to.the out para.met rwise?th.e c [string]. to time [/t.] [
cify a n.ew eep the.sam I code 2.7)? line by.its ne histo.ry?
plays or. se ry [size.]?? system.whe ting.?.f d
colon.? e execut.abl ies a se.rie ll debug. ou n exit c.ode
play the. cu ?.s a t" and ".std to that.fil
conditio.n i e follow.ing ilename1.] [ Loads a.pro ?.ng
prompt t.he sage "pa.cke tch prog.ram tring is. sp
Thanks for everything, but I am still stuck.
Ethan
=========
On 06/20/2013 07:22 PM Ethan Rosenberg, PhD wrote:
Dear list -
I am trying to copy FreeDOS to a flash drive. I can't make it work.
This is what I have done -
Command (m for help): p
Disk /dev/sdb: 4051 MB, 4051697664 bytes
125 heads, 62 sectors/track, 1021 cylinders, total 7913472 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00077d8f
Device Boot Start End Blocks Id System
/dev/sdb1 2048 989184 493568+ c W95 FAT32 (LBA)
/dev/sdb2 989185 7913471 3462143+ 83 Linux
Notice that sdb1 doesn't start at the beginning of the media, but rather
2048 sectors in. If your FreeDOS image is really a boot image (as the
name of the file suggests), then you need to start the copy at the very
beginning of the media, i.e., sector 0. So I would try:
dd if=/home/ethan/Downloads/FreeDOS-1.1-USB-Boot.img of=/dev/sdb
I then delete the DOS partition since it seems to be corrupted and add
regenerate the FAT Partition, and write it out.
Make file system:
mkfs.vfat /dev/sdb1
mkfs.vfat 3.0.16 (01 Mar 2013)
No sense making a file system because 'dd' is going to overwrite it.
Check file system:
fsck.vfat /dev/sdb1
dosfsck 3.0.16, 01 Mar 2013, FAT32, LFN
/dev/sdb1: 0 files, 0/61661 clusters
Copy FreeDOS:
dd if=/home/ethan/Downloads/FreeDOS-1.1-USB-Boot.img of=/dev/sdb1
63488+0 records in
63488+0 records out
32505856 bytes (33 MB) copied, 1.30864 s, 24.8 MB/
Check Mount:
/dev/sdb1 on /media/bkup type vfat
(ro,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=utf8,shortname=mixed,errors=remount-ro)
After you do the 'dd' command I suggested above, then do
fdisk -l /dev/sdb
to see what partitions are listed. There will likely be just one. You
can add more later. Best anyway to see what the 'dd' command leaves you.
Check Contents:
rosenberg:/media# ls -la bkup
ls: cannot access bkup/%f IN (-.--s: Input/output error
ls: cannot access bkup/in a bat.ch: Input/output error
ls: cannot access bkup/
label: Input/output error
ls: cannot access bkup/ng used.in: Input/output error
ls: cannot access bkup/ colon.
: Input/output error
ls: cannot access bkup/ry [size.]
....
hth,
ken
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