Arch Linux

swordfish

Member

Registered: 2012-01-14

Posts: 160

[solved] New ISO: From USB-Stick to USB-Drive

Hi there,

yesterday, I've installed Arch on an external USB-drive that is connected to my laptop (out of pure curiosity). I've started the new ISO-image from an USB-stick.

The installation went pretty well, but now I have a little problem - because of the USB-drives .

The situation: As long as the USB-stick is connected to the laptop I can start Arch from the external USB-drive. If I remove the stick Arch doesn't start any longer because the USB-"syntax" (can I say that?) has changed.

If both drives are connected: The stick is /dev/sdb and the harddrive is /dev/sdc

If I remove the stick, the harddrive becomes /dev/sdb and won't be mounted any longer.

During the installation I've created the partitions with the "-L" switch:

# mkfs.ext2 -L "Boot" /dev/sdc1
# mkfs.ext4 -L "Root" /dev/sdc5
# mkfs.ext4 -L "Home" /dev/sdc7
# mkswap -L "Swap" /dev/sdc6

The fstab-entries look like this example:

# UUID=6f639e1d-9cef-4830-b30e-3b74ce121b04 LABEL="Root"
/dev/sdc5   /    ext4    rw,relatime,data=ordered    0  1

So question: Would it be sufficient to work on /etc/fstab and change all /dev/sdc to /dev/sdb? Or can I simply use the existing UUIDs?

Last edited by swordfish (2012-07-26 20:11:09)

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Arch_x64 on Thinkpad Edge E520 (Intel Core i5, 4 GB RAM, 128 GB Crucial M4 SSD) + ITX-Desktop (Asrock H77M-ITX, Intel Core i3-2120T, 8GB RAM, 64 GB Samsung 830 SSD)

Larsson

Member

From: Sweden

Registered: 2010-03-22

Posts: 157

Re: [solved] New ISO: From USB-Stick to USB-Drive

It should be good if you use UUID for your usb stick.

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"If the person you are talking to doesn't appear to be listening, be patient. It may simply be that he has a small piece of fluff in his ear." - A.A. Milne (Winnie-the-Pooh)

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: [solved] New ISO: From USB-Stick to USB-Drive

UUIDs or labels are always preferable to /dev/sd*, because the latter can change, as in your case.

swordfish

Member

Registered: 2012-01-14

Posts: 160

Re: [solved] New ISO: From USB-Stick to USB-Drive

Switched to the UUIDs - works fine

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Arch_x64 on Thinkpad Edge E520 (Intel Core i5, 4 GB RAM, 128 GB Crucial M4 SSD) + ITX-Desktop (Asrock H77M-ITX, Intel Core i3-2120T, 8GB RAM, 64 GB Samsung 830 SSD)