HD crash: Unable to read partition table

[Stelios Bounanos]

 >>>>> On Fri, 14 Jun 2002 01:58:31 +0300, Άγγελος Οικονομόπουλος
 >>>>> <aoiko at cc.ece.ntua.gr> was runoured to have said:

 > On Friday 14 June 2002 01:12, Stelios Bounanos wrote:
 >> Basika to pio eykolo ap' ola sth ylopoihsh einai na exeis ena
 >> encrypted filesystem (+swap) wste ta dedomena na mh graftoyn
 >> pote san plaintext sto disko. Gia fantasoy px na exeis ena laptop
 >> me proswpika dedomena kai na to xaseis/soy to klepsoyn. Ti 8a kaneis
 >> tote, 8a tylikseis ena phnio gyrw apo oloklhrh thn polh? :-P

 > gia fantasou twra ena laptop pou xrhsimopoiei encrypted filesystem. pws 
 > einai dunaton to laptop na exei meinei anoixto gia oso xrono xreiazetai 
 > wste na baleis kati xrhsimo mesa? (giati einai profanes oti gia na 

Ok mallon exeis dikio. S' ayth thn periptwsh bazeis mono to /home
se encrypted fs kai de xrhsimopoieis swap :) Edw ypo8etw oti to /home
einai mikro, opws kai to I/O poy ginetai ekei panw, poy (toylaxiston etsi
opws protimw na setarw ta systhmata moy) moy fainetai logiko.
Kata t' alla, to overhead einai ontws shmantiko, px:

% time bash -c 'dd if=/dev/zero of=~/test bs=64M count=1; sync'
1+0 records in
1+0 records out

real	0m10.045s
user	0m0.000s
sys	0m6.650s

% time bash -c 'dd if=/dev/zero of=/opt/test bs=64M count=1; sync'
1+0 records in
1+0 records out

real	0m6.620s
user	0m0.010s
sys	0m1.320s

apla oxi ais8hto gi' ayto poy onomazw "logikh" xrhsh.

(To /home einai reiserfs panw apo AES/128, to /opt reiserfs xwris
encryption, kai ta dyo devices dipla-dipla ston idio disko, me
peripoy idio mege8os kai eley8ero xwro, epanalhpseis twn parapanw
bgazoyn paromoia apotelesmata klp. Ama 8elei kaneis pio sobara
benchmarks pernaei mia apo to ftp.kernel.org/pub/linux/kernel/people/hvr,
katebazei patches kai ta kanei monos toy :-P)

 > xrhsimopoieis encrypted filesystem, ta dedomena pou 8eleis na prostatepseis 
 > paragontai sto laptop - se ka8e allh periptwsh ta kruptografeis prin ta 
 > baleis sto sklhro)

 > an bebaia 8es kai steganografy, o max xronos leitourgias periorizetai gurw 
 > sta 15m.

E, ama 8es kai deniability, "such is the price of paranoia" :)


Rgds,
/-sb.