Ken -
Tried what you said, but I cannot make it work.
Here is what I did:
fdisk /dev/sdb
Command (m for help): d
Selected partition 1
Command (m for help):
Command (m for help): p
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
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
Using default value 1
First sector (2048-7913471, default 2048): 0
Value out of range.
First sector (2048-7913471, default 2048): 1
Value out of range.
First sector (2048-7913471, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-7913471, default 7913471):
989184
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): e
Changed system type of partition 1 to e (W95 FAT16 (LBA))
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or
resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
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
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)
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)
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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