https://crancho.com/w/index.php?action=history&feed=atom&title=GreenStarGreenStar - Revision history2026-05-02T05:45:34ZRevision history for this page on the wikiMediaWiki 1.39.2https://crancho.com/w/index.php?title=GreenStar&diff=989&oldid=prevOhayden: /* Preparing */2010-01-29T13:12:42Z<p><span dir="auto"><span class="autocomment">Preparing</span></span></p>
<p><b>New page</b></p><div>=Power Saving External Hard Drive=<br />
<br />
I purchased the following:<br />
*[http://www.anywareus.com/products/enclosures/me740pssbk.html GreenStar - USB External Drive Enclosure]<br />
*Seagate 750GB hard drive<br />
<br />
==Preparing==<br />
I tried formating in Windows with ntfs, but the drive kept powering off. I guess it the way Windows formats. With a quick format I was able to get it working though. I soon realized that I rather have the drive formated as ext2 for great NAS justice via my Linksys WRTSL54GS router. Here are the steps I took in nix:<br />
<br />
*Plugged in the USB drive and ran dmesg to find out which port it was on, which was sdf.<br />
dmesg<br />
<br />
[172017.336000] usb 2-7: new high speed USB device using ehci_hcd and address 7<br />
[172023.184000] usb 2-7: new high speed USB device using ehci_hcd and address 8<br />
[172024.016000] usb 2-7: new high speed USB device using ehci_hcd and address 9<br />
[172024.128000] usb 2-7: device descriptor read/64, error -71<br />
[172024.364000] usb 2-7: configuration #1 chosen from 1 choice<br />
[172024.364000] scsi7 : SCSI emulation for USB Mass Storage devices<br />
[172024.364000] usb-storage: device found at 9<br />
[172024.364000] usb-storage: waiting for device to settle before scanning<br />
[172029.364000] usb-storage: device scan complete<br />
[172029.364000] scsi 7:0:0:0: Direct-Access ST375033 0AS PQ: 0 ANSI: 2 CCS<br />
[172029.368000] sd 7:0:0:0: [sdf] 1465149168 512-byte hardware sectors (750156 MB)<br />
[172029.368000] sd 7:0:0:0: [sdf] Write Protect is off<br />
[172029.368000] sd 7:0:0:0: [sdf] Mode Sense: 00 38 00 00<br />
[172029.368000] sd 7:0:0:0: [sdf] Assuming drive cache: write through<br />
[172029.372000] sd 7:0:0:0: [sdf] 1465149168 512-byte hardware sectors (750156 MB)<br />
[172029.372000] sd 7:0:0:0: [sdf] Write Protect is off<br />
[172029.372000] sd 7:0:0:0: [sdf] Mode Sense: 00 38 00 00<br />
[172029.372000] sd 7:0:0:0: [sdf] Assuming drive cache: write through<br />
[172033.624000] usb 2-7: reset high speed USB device using ehci_hcd and address 9<br />
[172041.216000] sd 7:0:0:0: [sdf] Attached SCSI disk<br />
[172041.216000] sd 7:0:0:0: Attached scsi generic sg6 type 0<br />
*cfdisk /dev/sdf - Deleted the ntfs partition and created a new linux partition.<br />
cfdisk (util-linux-ng 2.13)<br />
<br />
Disk Drive: /dev/sdf<br />
Size: 750156374016 bytes, 750.1 GB<br />
Heads: 255 Sectors per Track: 63 Cylinders: 91201<br />
<br />
Name Flags Part Type FS Type [Label] Size (MB)<br />
------------------------------------------------------------------------------<br />
sdf1 Primary Linux 750153.77 <br />
<br />
*I ran mkfs to create the file system (format).<br />
mkfs -t ext3 /dev/sdf1<br />
<br />
mke2fs 1.40.2 (12-Jul-2007)<br />
Filesystem label=<br />
OS type: Linux<br />
Block size=4096 (log=2)<br />
Fragment size=4096 (log=2)<br />
91586560 inodes, 183143000 blocks<br />
9157150 blocks (5.00%) reserved for the super user<br />
First data block=0<br />
Maximum filesystem blocks=0<br />
5590 block groups<br />
32768 blocks per group, 32768 fragments per group<br />
16384 inodes per group<br />
Superblock backups stored on blocks: <br />
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, <br />
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, <br />
102400000<br />
<br />
Writing inode tables: done <br />
Creating journal (32768 blocks): done<br />
Writing superblocks and filesystem accounting information: done<br />
<br />
This filesystem will be automatically checked every 32 mounts or<br />
180 days, whichever comes first. Use tune2fs -c or -i to override.<br />
<br />
*To be extra safe, I ran a file system check.<br />
fsck -f -y /dev/sdf1<br />
<br />
fsck 1.40.2 (12-Jul-2007)<br />
e2fsck 1.40.2 (12-Jul-2007)<br />
Pass 1: Checking inodes, blocks, and sizes<br />
Pass 2: Checking directory structure<br />
Pass 3: Checking directory connectivity<br />
Pass 4: Checking reference counts<br />
Pass 5: Checking group summary information<br />
/dev/sdf1: 11/91586560 files (9.1% non-contiguous), 2924518/183143000 blocks<br />
<br />
<br />
*Since I have journaling (ext3), I don't need excessive system checks and I'm concerned with the fact that the USB HD will be powering off to save electricity, wear/tear, heat generation, etc.. I'm not certain how this will react with the forced fsck, so I'll turn it off and manually run them at my leisure. Likewise, I added the "-m 1" to set the reserved blocks to 1% as that's more of a sane percentage for today's large drives.<br />
tune2fs -c 0 -i 0 -m 1 /dev/sdf1 <br />
<br />
tune2fs 1.40.2 (12-Jul-2007)<br />
Setting maximal mount count to -1<br />
Setting interval between checks to 0 seconds<br />
<br />
==Using==<br />
*sudo mkdir /mnt/titan/<br />
*sudo mount /dev/sdf1 /mnt/titan/<br />
*df -h /mnt/titan/<br />
Filesystem Size Used Avail Use% Mounted on<br />
/dev/sdf1 688G 198M 653G 1% /mnt/titan<br />
<br />
[[Image:greenstar_usb_hd.jpg]]<br />
<br />
<br />
==Links==<br />
*Original Makers?: http://www.welland.com.tw/<br />
*US Identity: http://www.anywareus.com/<br />
*Purchased Here: http://www.mwave.com/Mwave/viewspec.hmx?scriteria=AA39300</div>Ohayden